Gundam possesses a unique character with dark undertones. He believes he was granted the abilities of evil from the underworld and refers to others as "pathetic humans." Gundam tends to focus on himself and his hamsters, sometimes disregarding events happening around him. Despite this, Gundam is deeply passionate about his pets and has a thorough understanding of their breeding. He maintains an informative website on the subject which he updates meticulously.
Gundam kills Nekomaru Nidai in Chapter 4, trying to save his friends from starvation. He is executed by Monokuma when he is found guilty by Hajime Hinata.