Gatto wears an open white lab coat over a black vest and white tie, with a grayish-blue striped undershirt. His light gray plaid pants end above his ankles, paired with polished black shoes featuring gold details. A mask rests beneath his chin, and flasks are tucked into his coat pocket, with a larger one at his hip. His cat perches on his left shoulder. Small round glasses sit atop his head, his fair skin and side-swept light gray hair tied into a short ponytail. He is quiet and reserved.