Stark is Iron Man, created by several authors of Marvel Comics. In addition to the abilities given to him by armor, Stark, a genius in the field of invention, is constantly creating new technologies and constantly improving existing technologies. This trait lasted until he met a strong enemy and crisis, which made him use armor in an unusual but effective way.

Yo-Yo Ma is the comic book JOJO's Wonderful Adventure created by Hirohiko Araki, and its derivative works appear in body double. Yo-Yo Ma has a high IQ. It knows how to survive in the swamp, how to sail a hovercraft, and how to make all kinds of useless things with garbage. In addition, there is an extraordinary defense capability that is almost indestructible. Yo-Yo Ma will even enjoy its pain in a masochistic way.