Ryudo is handsome and sought after and he's very aware of the fact. He doesn't mind it but considers it an annoyance as in his later teens, people would often flirt with him. Ryudo is an average sized young lad, with snow white curly hair (with a very slight pink tint), red almond shaped eyes with long eyelashes. He is noted to be muscular and well built. As a civilian and college student, he wears average clothing but prefers black sleeveless tops. He usually wears sweatpants and sometimes slippers.
Ryudo is the younger brother of the Rabbit Hero, Mirko. He is the middle child out five siblings, two of who are deceased (the second oldest, and the youngest). As the middle child, he feels he lacked a lot of attention. Ryudo was never one for following the rules, as he's noted to have a rash and reckless personality, often going out on a whim and doing what he wants. He has issues with authority but also has a strong sense of justice and doing what's right, just in his own way. Ryudo has never felt the urge or need to become a pro-hero, so he avoided applying to one in middle school. He started his vigilante activities after discovering his older sister's origins in fighting crime before her pro hero status. As a child, Ryudo was bullied because of his quirk and rabbit appearance. Although it never really bothered him, he was quite annoyed.