Chomusuke

Chomusuke is a jet-black cat distinguished by a cross-shaped mark on its forehead and a pair of small wings on its back. Officially registered as Megumin's familiar, this clever feline understands human speech and carries a gentle, somewhat shy demeanor—often falling victim to the pranks of Mimi and Zelta. Beneath its adorable appearance lies a profound secret: Chomusuke is the living embodiment of half the soul belonging to Wolbach, the dark goddess of sloth and tyranny. While deeply affectionate toward both Megumin and Kazuma, it harbors an unmistakable animosity toward the goddess Aqua, and their comical clashes have become one of the series' most entertaining recurring dynamics.