Prev Chomusuke
 Japanese ちょむすけ
• Characteristics•
 Gender Female
 Hair Color Black
 Eye Color Yellow
• Professional Status•
 Affiliation Megumin
 Previous Affiliation Wolbach
 Occupation Familiar
• Personal Status•
 Status Alive
 Relative(s) Wolbach (other half)
• Debuts•
 Light Novel Volume 1
 Manga Chapter 1
 Anime Episode 12
• Portrayal•
 Japanese Voice Nabatame Hitomi

Chomusuke (ちょむすけ) is Megumin's familiar and the other half of the Goddess Wolbach.


Chomusuke is a black cat with bat wings and red cross-shaped marking on her forehead. She has stubby legs, big round head, and yellow oval eyes. When she's happy or angry, she shows sharp teeth.


Chomusuke cannot speak human language, but she seems to be fairly intelligent and can understand human speech to some extent. One time, Kazuma saw her heating up leftover fish with fire breath. Her true power got sealed sometime ago, so the poor Chomusuke often got bullied by kids.

She is friendly with almost everyone, with the exception of Aqua and Emperor Zell. She really likes Wiz and Kazuma, as those two treated her with extra kindness.


Around 8 years before the main series, a young Megumin played with the complex sealing stone as a puzzle toy, and accidentally released Wolbach and Chomusuke. Wolbach used Explosion to defeat the beast and saved Megumin. She then drained the beast of most of its power and size, turning it into a small cat. After doing so, Wolbach also resealed Chomusuke to be released at the right time later.

Seven years later, Komekko, Megumin's much younger sister, who didn't have any proper toy either, also solved the sealing stone easily and unsealed the black cat again. In her weakened state though, the cat was no match against Komekko, and almost became family meal on several occasions.


  • Kazuma is among the names that Megumin's classmates recommended for Chomusuke when Megumin deemed the cat to be her familiar.