Chandler, a high-ranking demon forged from the splintered essence of the primordial Original Demon, was crafted by the Demon King as a loyal enforcer. Following rebellion, his fractured existence split into two entities: himself and Cusack, each assigned to mentor the Demon King’s heirs—Meliodas and Zeldris. As Meliodas’ combat instructor, Chandler developed an obsessive devotion to his pupil, persisting even after Meliodas defected to protect the goddess Elizabeth three millennia prior. He dismisses his student’s betrayal as Elizabeth’s manipulation, clinging to delusional loyalty.

Initially appearing as a diminutive elder with spiky green hair, a trimmed beard, and opulent robes adorned with rings, Chandler’s true form emerges as a towering demonic figure. His transformation reveals blackened hair, inverted eyes, expanded wings, and a jagged demonic crest engulfing half his face. Muscular limbs streaked with dark energy replace his frail facade, radiating menace.

Driven by single-minded allegiance to Meliodas, Chandler oscillates between a grandfatherly affectation and explosive brutality. He masks malice beneath false warmth but unleashes carnage when challenged, prioritizing Meliodas’ safety over all else—even bargaining with adversaries to reclaim him. His venomous hatred for Elizabeth fuels repeated assassination attempts, blaming her for corrupting his prized pupil.

Chandler commands arcane powers like Full Counter, a spell that rebounds magical assaults with heightened force. His arsenal includes erasing enchantments (Absolute Cancel), compressing foes into specks (Microscopic), summoning celestial firestorms (Meteorworks), and enforcing submission via cursed seals (Absolute Order). A sword hidden within his cane complements his mastery of darkness magic, which he wields to shroud battlefields in artificial night, crippling light-reliant enemies.

Throughout the New Holy War, Chandler clashes relentlessly with the Seven Deadly Sins, overpowering them until reinforcements disrupt his onslaughts. After Meliodas awakens as the Demon King’s vessel, Chandler shadows him to Camelot, plotting Elizabeth’s demise. His tenacity surfaces when surviving Excalibur’s decapitating strike, regenerating instantly to assess the blade’s limits.

In his final act, Chandler reunites with Cusack, merging into the resurrected Original Demon to serve their creator one last time before defeat. His legacy hinges on the contradiction of merciless obedience to demonic hierarchy intertwined with warped paternal affection for Meliodas—a duality shaping every ruthless choice.