Hiro is one of Huey's friends, a young Japanese-American DJ. Hiro only appeared in the original Diamondback version of the strip and was a great DJ. He is named after Mangaka Katsuhiro Otomo.
| Main Characters | Huey • Riley • Grandad • Ruckus • Tom • Sarah • Jazmine • Michael |
| Recurring Characters | Ed Wuncler • Eddie Wuncler •Ed Wuncler lll • Gin Rummy • A Pimp Named Slickback • Thugnificent • Sitnkmeaner • Cindy McPhearson • Gangstalicious • Bushido Brown • Rev. Rollo Goodlove • Lethal Interjection Crew |
| Other Characters | Cairo • Dewey Jenkins • Hiro Otomo • Phil • Cookie Freeman • Jericho Freeman • The Hateocracy • Moe Jackson • Cristal • Luna • Ebony Brown • Ming • Mrs. Von Hausen • Butch Magnus • Lamilton Taeshawn • Devil • Shabazz K. Milton Berle • Catcher Freeman • Xzibit • Martin Luther King Jr. • Wedgie Ruldin • Deborah Leevil • Winston Jerome • Jimmy Rebel • Mr. Uberwitz • Sway Colloway • Dr. Doomis • The Booty Warrior • Lando Freeman • Ruckus Family • Big Nigga • Crazy Bitch • Pretty Boy Flizzy • Boss Willona • Geraldine • Kardashia |