Chudelkin holds the position of Chief Elder within the Axiom Church of the Underworld, serving directly under Supreme Priest Quinella. His grotesque, clownish appearance features a disproportionately large head, a compact torso, and stubby limbs. A flamboyant, mismatched costume adorned with golden buttons and a jester-style hat amplifies his diminutive frame with an illusion of bulk. Renowned for unconventional spellcasting, he frequently performs sacred arts while inverted, balancing on his head.

As Quinella’s fiercely loyal enforcer, he governs the upper echelons of the Central Cathedral and ensures strict adherence to the Taboo Index. He dehumanizes Integrity Knights by addressing them solely through numerical designations, underscoring his contempt for subordinates. Mastery of advanced sacred arts enables him to channel spells through limbs, eyes, and inverted postures, executing tasks from memory alteration during Knight adjustments to immobilizing enemies with freezing rituals.

Selfish, crude, and ruthlessly cruel, Chudelkin exhibits obsessive devotion to Quinella, craving her validation at any cost. This fixation drives him to unquestioningly fulfill her commands, including fabricating evidence against Bercouli and petrifying the knight. When intruders threaten the Cathedral, he relentlessly attacks Kirito and Alice Zuberg, though his efforts falter repeatedly. Ultimately abandoned by Quinella, he ignites himself in a fiery ritual to entrap her, ensuring their shared destruction.

Widely despised by both Integrity Knights and church authorities, his tenure leaves a legacy of alienation and futility. No grief follows his demise, cementing his indifferent legacy. Beyond the Alicization narrative, no supplementary media expands his role or presence. Available records omit specifics on his age, origins, or pursuits outside servitude to Quinella, concluding his arc definitively with his self-destructive end alongside her.