Koi Boi

    Character » Koi Boi appears in 51 issues.

    Ken Shiga is a student at Empire State University and the crime-fighting partner of rookie hero Chipmunk Hunk. He has the power to talk to fish.

    Short summary describing this character.

    Koi Boi last edited by Spacey on 05/20/22 02:02PM View full history


    Very little is known about Ken Shiga. Apparently born with his superhuman abilities, he became a costumed crime-fighter with his friend Chipmunk Hunk when both began attending Empire State University.


    Koi Boi was created by Ryan North and Erica Henderson. He made his first appearance in The Unbeatable Squirrel Girl #2.

    Major Story Arcs

    Squirrel Girl

    Koi Boi meets and becomes friends with fellow crime-fighter and computer sciences student Squirrel Girl while both are attempting to defeat Hippo. During Ratatoskr's attempt to take over the world he and the other heroes join forces to try to take her down. In the attempt he is corrupted by Ratatoskr, and briefly joins her army of brainwashed humans before she is ultimately defeated. He later helps Squirrel Girl defeat Swarm.

    Powers and Abilities

    Koi Boi is able to communicate with fish; the limits of this ability are unknown. He is also able to swim at superhuman speeds and to breathe underwater. He is able to grow very slowly to fit the size of his container. He has magnetic cells similar to some fish, which give him the ability to navigate using Earth's magnetic fields. Due to his powers he has developed advanced knowledge of fish and the fish-adjacent.

    Other Media

    Squirrel Girl: The Unbeatable Radio Show!

    Koi Boi is a main character on this radio play/podcast. He is performed by Leo Sheng.


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