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Character

Cosmo

cosmo_(chainsaw_man)

Cosmo, also known as the Cosmos Fiend, is a character in Chainsaw Man. She is one of the four female fiends serving under the Chinese devil hunter Quanxi, with whom she also shares a romantic bond. Characterized by her surreal behavior, she plays a unique role among Quanxi's companions.

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Overview

Cosmo, also known as the Cosmos Fiend, is a character in Chainsaw Man. She is one of the four female fiends serving under the Chinese devil hunter Quanxi, with whom she also shares a romantic bond. Characterized by her surreal behavior, she plays a unique role among Quanxi's companions.

Appearance

Cosmo has pink hair styled into short twintails, and her heart-shaped pupils are visible in her eyes. The right half of her brain is exposed on top of her head with a portion tied into a knot, while her right eyeball dangles downward from its socket. Her outfit includes a long-sleeved shirt paired with a ribbon.

Personality

In daily life, Cosmo displays a hyperactive and erratic demeanor, acting at her own pace and communicating solely by repeating the word "Halloween." Despite this erratic behavior, she can be relatively harmless toward ordinary humans. However, within the mental plane where her power manifests, her personality shifts entirely: she demonstrates high intelligence, speaking with calm, detached rationality.

Abilities

Cosmo possesses the ability to force total comprehension of all knowledge in the universe directly into a target's mind. While she can moderate the effect to mild mental alteration, unleashing her full power floods the victim's consciousness with infinite cosmic information. This leaves the target permanently incapacitated, unable to think of anything and reduced to repeating "Halloween" continuously.

Background

Cosmo enters the story alongside the Chinese devil hunter Quanxi as part of her group of fiend companions. During the chaos in Tokyo involving public safety officers and international assassins, she accompanies Quanxi and utilizes her supernatural mental abilities when confronting formidable opponents.

Relationships

Cosmo is devoted to Quanxi, serving both as her loyal associate and romantic partner. She maintains a close association with the other three fiends under Quanxi's care: Pingtsi, Long, and Tsugihagi.

Trivia

The spiritual dimension in which Cosmo reveals her true intelligence is depicted as a vast library filled with endless books. When deploying her full cognitive attack, she adopts a distinctive martial arts posture accompanied by a stylized chant.