Diane

Name: Diane

Gender: Female

Race: Giant Clan

Alias/Title: Serpent Sin of Envy Diane

Affiliation: The Seven Deadly Sins, Boar Hat tavern

Age: About 750 years old (approximately 15 in human terms)

Birthday: December 24

Blood Type: O

Height: 915 cm (giant form), 165 cm when shrunk

Weight: Unknown

Three Sizes (giant scale, proportional): 91–58–90

Hometown: Megadoza (Giant Clan village)

Combat Class (initial): 3350 (Magic: 900 / Strength: 1970 / Spirit: 480)

Later Combat Class: Around 8000 normally; about 48,000 when using Drole’s Dance

Combat Class when shrunk (later): 15,100 (Strength 950 in early data, others unknown)

Favorite Food: Whole roasted pig

Tattoo/Mark: Serpent emblem on left thigh

Sin: Envy (Serpent Sin of Envy)

Weapon Type: War hammer

Sacred Treasure: War Hammer Gideon

Inn Role: Main poster girl and street caller of the Boar Hat

Voice Actor (anime): Aoi Yuki

Diane is a gentle, warm-hearted giant girl who refers to herself with the boyish first-person “I,” but is emotionally very much a teenage girl.

She is cheerful and straightforward, prone to sulking, and when embarrassed she hides her face behind her hair.

She has an excellent figure and, scaled to human size, would be considered heavily busty, with the author noting her and Matrona as the largest-busted female characters.

Meliodas teases that her chest is slightly smaller than Elizabeth Liones’s but her hips are bigger.

Despite being one of the physically strongest members of The Seven Deadly Sins, she dislikes pointless fighting and questions the Giant Clan’s culture of glorifying battle.

She is kind to noncombatants and children, and cannot fully abandon mercy, a softness that sometimes limits her actual combat output.

She has a complex about her massive size and often wishes she could be small and live among humans more normally.

She is also unexpectedly girly: she is scared of bugs, gets flustered by romance, and treasures her friendships deeply.

Diane is fiercely protective of her comrades and innocent people.

When her friends or ordinary citizens are harmed, she shows absolutely no mercy to the perpetrators.

Diane has light purple eyes and brown hair, usually styled in distinctive twin-tails that reach slightly past her shoulders when let down.

Her overall style, from hair to clothing, was originally chosen for her by King when they lived together centuries ago.

In the first part of the story, she wears a yellow-orange leotard-like outfit with gloves on both arms, though one glove is destroyed during her clash with Gilthunder.

Her body is curvy and athletic, scaled up to giant size, and she is often portrayed as the most voluptuous female character in the cast.

In the second part, she changes to a chest-vented turtleneck dress with shorts underneath.

She later gains the ability to shrink at will using Merlin’s Minimize Tablet, letting her live temporarily in human scale.

She has the serpent symbol of her Sin carved into her left thigh, which marks her as the Serpent Sin of Envy.

Diane’s combat style combines brute physical power, her sacred treasure Gideon, and the Giant Clan’s earth-manipulating magic.

She is one of the top two physical powerhouses in The Seven Deadly Sins, alongside characters like Escanor and Ban.

She predominately fights with tremendous shockwave blows from her giant hammer and large-scale terraforming magic.

Even without Gideon, her raw strength allows her to crush enemies, shatter rock and metal, and reshape terrain with kicks and punches.

Once she learns Drole’s Dance (Drole’s Dance), she can continuously raise her combat class mid-battle.

This lets her escalate from about 8000 to around 48,000 during major fights, making her a true battlefield-level threat.

Her fighting style is highly mobile for a giant, including leaps, hammer spins, and creative use of terrain she creates herself.

However, she sometimes holds back due to her reluctance to harm the land or innocent life, especially when using Gideon’s lightning-rod ability.

Gideon (War Hammer Gideon)

Gideon is Diane’s sacred treasure: a colossal war hammer weighing about 2,200 pounds (around 1 ton).

Its design resembles a massive sledgehammer and is almost as tall as Diane herself in human scale.

Gideon’s special property is called “Lightning Rod,” which allows it to absorb and redirect the magical power of incoming attacks into the ground.

This ability makes Diane effectively immune to many magical strikes when she has Gideon in hand.

However, channeling that energy into the earth puts the land and its living creatures at risk of destruction.

Because of this, Diane dislikes relying on this ability unless absolutely necessary.

Gideon greatly amplifies Diane’s earth magic and enables her largest signature techniques such as Mother Catastrophe and Ground Gladius.

After the Seven Deadly Sins disbanded ten years before the main story, Gideon went missing, later recovered by the kingdom and used as bait in the Vaizel Fighting Festival.

Creation

Diane’s innate magic is called Creation, a power shared by the Giant Clan that lets her manipulate earth, minerals, and stone.

She can twist iron like taffy, raise entire strata into towers, and reduce solid rock to flowing sand.

Her magic is deeply tied to the earth itself, and her power and stability increase when she is standing on solid ground.

Through trials and training, especially under Drole’s influence, she evolves her Creation magic into a near-divine level of planetary manipulation.

Sand Whirl

Diane transforms minerals and solid ground into sand and creates a swirling vortex under an opponent’s feet.

This sand whirl drags them down and severely restricts their mobility.

Heavy Metal

Diane transforms her own body into an incredibly dense and hard metallic state.

This boosts her defense drastically and allows her to use her own weight as a weapon, crushing enemies by falling or slamming into them.

Mother Catastrophe

Mother Catastrophe is one of Diane’s major ultimate attacks, especially amplified by Gideon.

She smashes the ground with Gideon, tearing up a massive volume of earth, hurling it into the sky, compacting it into a colossal boulder, and then dropping it onto the airborne enemy.

The combination of the impact, the falling mass, and the pressure makes this technique devastating against large groups or massive targets.

Ground Gladius

Using Gideon as a focus, Diane causes the ground to rise up into the shape of a colossal sword.

She then drives this enormous earthen blade into her target, concentrating its full power at the tip for maximum piercing damage.

Rising Meteor

Diane shapes the ground into a star-like formation beneath the enemy.

This formation then erupts upward, launching the foe high into the sky like a meteor heading upward.

Rush Rock

Diane levitates a huge number of rocks at once and sends them flying toward her opponent in a dense barrage.

The continuous rock storm functions like a magical machine gun, overwhelming lighter foes.

Phila and Rose (Twin Giants)

Diane creates two huge stone golems in the shape of giants and remotely controls them in battle.

As a child, before meeting King, she lived and played with these two rock giants, naming them Phila and Rose.

Double Hammer

Diane conjures two enormous stone fists and hammers an enemy between them or uses them as giant floating gauntlets.

This gives her reach and striking power even without her physical hands or Gideon.

Friends (Earth Dolls)

Friends are advanced earth golems shaped after real people Diane knows.

These earthen clones are stronger than her twin giant golems and even overpowered one of Drole’s own golems.

She has created copies of Meliodas, Elizabeth Liones, Matrona, King, and Hawk.

Each Friends golem mimics the basic form and some fighting style of its original, though not their full power.

Crazy Rush

Using Creation, Diane shapes the ground into countless giant fists.

She then sends these fists punching in rapid succession, pummeling enemies with an overwhelming flurry of blows.

Earth Dance / Drole’s Dance

Diane learns the Giant Clan’s sacred dance from Drole after enduring his trial.

By performing this earth-connected dance, her combat class and magical output steadily rise as long as she continues.

Drole’s Dance lets her raise not only her own power but, in some depictions, can also be performed to enhance a chosen ally’s combat class.

It symbolizes Diane accepting her role as a true giant warrior linked to the land itself.

Queen Empress

Diane causes the ground to surge like a massive stone tsunami.

This wave of earth engulfs enemies in its path and is powerful enough to swallow even large demons in an instant.

Diamond Shield

Diane brings forth a huge rectangular shield-like slab of hardened earth or crystal from the ground.

It functions more like a wall than a normal shield, often large enough to cover multiple allies, and has a carved face-like design in the center.

Diamond Tower

Diane makes several enormous crystalline pillars, described as diamond-like, erupt from the ground and shoot skyward.

These towers can impale or trap enemies and drastically reshape the battlefield.

Mother Creation

Mother Creation represents the pinnacle of Diane’s Creation magic.

Instead of simply shaping existing earth, she effectively dominates all ground in a broad area and forms entirely new landscapes.

She uses Mother Creation to erase the “magic lake” that serves as a power source for the Demon King and instantly create a massive stone arena with huge area.

The scale and speed of this attack approach godlike territory, comparable to divine or demonic powers.

Jet Hammer

Diane condenses enormous magic into a single massive earth fist and launches it like a high-speed projectile.

Jet Hammer is used as her contribution to The Seven Deadly Sins’ combined ultimate techniques.

Combination Techniques

Metal Crash

In Metal Crash, Diane uses Double Hammer or similar earth fists to restrain the enemy.

Meliodas then rushes in and slashes the immobilized target, creating a devastating follow-up.

Cross Shooting

Cross Shooting is a combination of King’s spear spirit, Chastiefol, and Diane’s Rush Rock.

Diane’s barrage of stones staggers the enemy, and King’s spear then pierces them in a crosswise strike.

Irreconcilable Enemies

Irreconcilable Enemies is an all-out combination move from The Seven Deadly Sins, orchestrated by Merlin.

It combines Meliodas’s Trillion Dark, Ban’s Killing Storm (identified once as Crazy Rush in magazine print), Diane’s Jet Hammer, King’s Judgment Spear, Gowther’s Magic Sever, and Escanor’s Final Flame of the End.

Merlin fuses all these spells into one massive attack using Full Magic Combination.

Meliodas then repeatedly uses Full Counter to multiply the power until it becomes a world-shaking blast said to be capable of obliterating the entire Britannia continent.

Diane’s official crime is recorded as: “Out of envy of strength, she poisoned the kingdom’s ally Matrona and, to silence witnesses, slaughtered 330 innocent kingdom knights.”

This is what earns her the Serpent Sin of Envy.

In reality, a group of Holy Knights, including Ganon, plotted to kill the “rebel giants” Matrona and Diane to claim the glory.

They poisoned Matrona during a mission and attempted to finish both giants off.

The dying Matrona retaliated with her magic, killing many knights in self-defense.

The surviving knight then shifted all blame onto Diane, claiming she murdered Matrona and massacred the knights.

Diane, who detested senseless fighting and already felt guilty and confused, did not resist arrest and surrendered peacefully.

She was sentenced to immediate beheading, but Meliodas took custody of her under royal decree, sparing her life and recruiting her into The Seven Deadly Sins.

Her “envy” is less about malicious jealousy and more about her complicated feelings regarding strength, acceptance, and the wish to be smaller and more human-like.

These emotions make her vulnerable to accusations yet also deepen her compassion.

Before the Main Story

Roughly 700 years before the main story, Diane ran away from the Giant Clan’s village, rejecting their war-focused culture.

During her wandering, she found and saved a memoryless fairy named Harlequin—later known as King.

Diane and King lived together in peace for about 500 years.

King taught her how to make clothes and tools, and even chose her hairstyle and outfits.

During this time, they grew very close and fell in love with each other.

Diane made him promise, “Stay in love with me forever,” and cherished that promise deeply.

Eventually, King left to atone for his own sins and responsibilities as Fairy King.

Before leaving, he erased Diane’s memories of their time together, believing it would protect her from pain.

Later, around 16 years before the main story, Diane and Matrona accepted a request from the kingdom of Liones to assist its Holy Knights.

This mission turned out to be a trap by ambitious Holy Knights seeking fame by slaying giants, resulting in the tragedy that framed Diane for mass murder.

Ten Years Before the Story

Ten years before the start of the series, The Seven Deadly Sins were falsely accused of plotting a coup against the kingdom.

The group scattered, and Diane escaped into the White Dream Forest.

There, she intimidated and bargained with the native monsters called Hide-and-Seek to help hide her.

She lived in hiding, often thinking about her comrades and her desire to be smaller and fit in among humans.

Reuniting with The Seven Deadly Sins

Early in the main story, Meliodas and Elizabeth Liones, searching for the scattered Sins, entered the White Dream Forest.

They reunited with Diane, who then joined them on their journey.

At first, Diane was romantically fixated on Meliodas because he had once treated her as just a girl, not just a giant warrior.

She viewed Elizabeth as a rival and often snapped at her or tried to get Meliodas’s attention.

Over time, watching Elizabeth’s courage and kindness changes Diane’s attitude.

The two become close friends, eventually calling each other by name and sharing secrets, including Diane’s real feelings for King.

During the Vaizel Fighting Festival, Diane is shrunk by spores from the mushroom-like monster Chicken Matango, along with Elizabeth.

In her human-sized form, she enters the tournament under a disguise and battles various foes while searching for Gideon.

Later, Merlin creates the Minimize Tablet, a pill that lets Diane shrink for about seven hours at a time.

This finally grants Diane her long-held wish to become small, at least temporarily, and socializes more easily with humans.

Memory Loss and Recovery

Near the end of the first part, Diane recovers the memories King had erased years ago, remembering their life together and how she loved him.

She confides in Elizabeth Liones that she loves King and not Meliodas anymore.

However, a rampaging Gowther, fascinated by her feelings and memories, uses a spell called Fading Other Shore to tamper with her mind.

As a result, Diane loses all memories from after joining The Seven Deadly Sins, including her bonds with her comrades.

In her confusion, she wanders alone until Matrona, now alive, finds and shelters her.

Diane then travels with Matrona for a time, rediscovering her own identity through battle and companionship.

Vaizel Great Fighting Festival and the Ten Commandments

During the Vaizel Great Fighting Festival, Diane pairs up with King to fight a proxy of the Ten Commandments.

Working together, they secure a hard-fought victory, strengthening their trust and rekindling their connection.

Afterward, Diane lives with King for a while, though her memory of their long past is still incomplete.

Their time together is interrupted when Gloxinia and Drole appear, offering them a trial that sends their consciousness back 3,000 years into the past.

Trial 3,000 Years Ago and Growth

In the distant past, Diane witnesses the original Holy War and the true history of demons, goddesses, fairies, and giants.

She experiences the lives of others and faces the moral complexity of war, prejudice, and betrayal.

There, Diane meets the original Gowther, the so-called “Selfless” Gowther, who releases the memory spells in her mind.

This restores not only her memories of King and the Seven Deadly Sins but also long-buried childhood memories.

Upon returning to the present, Diane fully recognizes King, their shared past, and her enduring love for him.

She and King finally become openly and mutually in love, ending their long-standing romantic misunderstandings.

She also fulfills a promise to the past Gowther by helping restore the present Gowther’s heart and memories.

Through this, Diane and Gowther reconcile, forming a deeper bond of understanding and forgiveness.

Holy War and Battles Against the Demon Clan

During the renewed Holy War, Diane and King display extraordinary power together, fighting back hordes of demons.

Their combined magic and teamwork allow them to stand against members of the Ten Commandments and stronger foes.

They are attacked by Estarossa, leading to a desperate series of encounters involving the Commandments and the terrifying power of the archangel Mael.

When Mael awakens and absorbs multiple Commandments, putting everyone in extreme danger, Diane rushes to the scene.

She joins forces with Gowther and King to confront the transformed Mael.

Their teamwork, along with Gowther’s mental magic and King’s evolved spear, helps turn the tide in this immensely dangerous battle.

Later, Diane travels with the others to Camelot to rescue Meliodas from his plan to become the new Demon King.

She fights alongside the Sins against demonic forces and supports Meliodas and Ban in their final stand against the Demon King.

During the climactic conflict with the revived Demon King, Diane uses her ultimate Creation magic, including Mother Creation.

At one point, while speaking about her dreams and future, King formally proposes to her in the midst of battle.

Diane accepts, emotionally moved, and their engagement becomes a symbol of hope amid the chaos of the Holy War.

After the Demon King’s defeat, they move forward to build a peaceful future together.

After the War and Role as Giant Queen

Following the Demon King’s defeat, Diane and King return to the Fairy King’s Forest.

Diane becomes the new leader of the Giant Clan, effectively its queen, while King rules as Fairy King.

Together, they plan to create a joint kingdom where fairies and giants coexist in harmony.

This marks the fulfillment of Diane’s long-held dream: a life not defined by war, but by community and peace.

In the sequel series Four Knights of the Apocalypse, Diane appears as an adult, now firmly established as Giant Queen and King’s wife.

She and King have seven children together, including their daughter Tiore.

Their first child was lost through a changeling incident, leaving Diane with deep pain and longing.

Despite this, when a human boy named Myrtle is left in their care, she loves him just as much as her own children.

Diane’s family life shows a softer, maternal side of her character.

She continues to be protective, nurturing, and determined to maintain peace for both her children and the entire world.

Meliodas

Meliodas is the captain of The Seven Deadly Sins and the one who saved Diane from execution by taking her into the group.

In the past, he defended her from humans and treated her as a girl, not just a giant warrior, which initially made her fall in love with him.

Over time, Diane realizes her feelings for Meliodas are more like admiration and friendship.

He sees her as a precious comrade and trusts her strength and kindness deeply.

Elizabeth Liones

Diane initially sees Elizabeth Liones as a rival for Meliodas’s affection.

She is cold and dismissive at first, especially during early travels.

Watching Elizabeth risk herself for others and stubbornly pursue peace changes Diane’s mind.

They become close friends, confide in each other about love and fears, and mutually support each other in battle and in daily life.

By the time Diane admits to Elizabeth that she is truly in love with King, the two are already best friends.

Elizabeth’s encouragement helps Diane come to terms with her own feelings and find courage to move forward.

King (Harlequin)

King is the Fairy King and a member of The Seven Deadly Sins.

He is Diane’s greatest love and partner in both war and peace.

They first lived together centuries ago when King had lost his memories and went by Harlequin.

He taught Diane how to sew, cook, and craft, shaping much of her gentle lifestyle and even her fashion.

They promised to stay in love forever, but King left, erasing her memories out of guilt and duty.

After regaining those memories and surviving many hardships, they openly confess their feelings and eventually marry.

Over the course of the Holy War, King and Diane fight side by side, their powers evolving in sync.

After the war, they return to Fairy King’s Forest, marry, and become rulers of both fairies and giants.

They have seven children together and share a deeply affectionate, sometimes shy, but always supportive relationship.

Their bond is one of the central romances of the series, often showing both comedic awkwardness and moving emotional moments.

Matrona

Matrona is an elite warrior of the Giant Clan and Diane’s mentor and command leader.

She trained Diane harshly, emphasizing the warrior ethos of their people.

While Diane initially resented the endless combat training, she also admired Matrona’s strength and leadership.

The tragedy that seemingly claimed Matrona’s life and framed Diane left deep scars on Diane’s heart.

Later, it is revealed that Matrona survived.

She finds the memory-lost Diane, protects her, and travels with her, helping Diane remember who she truly is.

Their relationship evolves from strict teacher-student to something closer to mother and daughter.

Diane’s growth as Giant Queen is strongly rooted in Matrona’s influence and teachings.

Hawk

Hawk is the talking pig who serves as Boar Hat’s “captain of leftovers.”

Diane loves roasted pig so much that she initially tries to eat Hawk when they first meet after reuniting with Meliodas.

Despite this rough start, Diane and Hawk become close friends and comic partners.

She often teases him but also relies on his commentary and considers him part of her precious family.

She even creates an earth golem copy of Hawk in her Friends technique.

This shows how important he is in her heart, alongside Meliodas, Elizabeth Liones, Matrona, and King.

Howzer

Howzer is a Holy Knight who fights Diane in the Vaizel Fighting Festival.

During the festival, she uses a false name and faces him as an opponent.

Their fight is notable for the mutual respect that develops.

Howzer acknowledges her strength and kindness, and Diane sees that not all Holy Knights are treacherous like those who framed her.

Drole

Drole (also known as Drole, the Patience of the Ten Commandments) is the original king of the Giant Clan and a member of the Demon King’s elite.

After the Vaizel Great Fighting Festival, Diane’s path becomes entwined with Drole’s.

He subjects her to a trial by sending her consciousness back 3,000 years, forcing her to experience the past Holy War.

Through this ordeal, Diane learns the true history of the world and what it means to be a giant.

Drole recognizes Diane’s potential and entrusts her with the Giant Clan’s sacred dance.

By inheriting Drole’s Dance, Diane symbolically becomes his successor, paving the way for her future as Giant Queen.

Gowther

Gowther, the Goat Sin of Lust, becomes both a source of trauma and eventual ally for Diane.

His impulsive use of memory magic once strips away Diane’s memories of her time with the Seven Deadly Sins.

In the distant past, the original Gowther, known as “Selfless” Gowther, helps unlock Diane’s sealed memories.

Diane later works hard to restore the current Gowther’s heart and fragmented emotions.

They eventually reconcile, and Diane forgives him for what he did.

Their relationship becomes a symbol of the possibility of healing after emotional harm.

Other Notable Connections

Diane interacts meaningfully with many others, including Ban, Escanor, Merlin, and the rest of The Seven Deadly Sins.

She supports Arthur Pendragon’s rise indirectly through her fights for peace and is part of the alliance that protects Britannia.

Bartra Liones, the king of Liones, sees value in the Sins and indirectly in Diane’s loyalty and power.

Even characters like Gilthunder, initially enemies or rivals, come to see Diane as a genuine hero.

Diane once appeared on the cover of Weekly Shonen Magazine in a swimsuit, posed like a gravure idol.

This highlighted her popularity and iconic status among fans.

Her catchphrase-like sentiment is that even in painful memories, there are precious moments worth remembering.

This fits her story, where traumatic events are intertwined with the friendships and love that define her life.

She is often described as the female character in the series with the largest bust, tied with Matrona.

Questions about which female character has the biggest chest prompted the author to name Diane and Matrona specifically.

Despite her incredible might and status as Giant Queen, Diane’s core remains the same: a kind-hearted girl who once just wanted to be small, loved, and accepted.

Her journey from lonely runaway to queen of giants and partner to the Fairy King is one of the central emotional arcs of The Seven Deadly Sins universe.