Comic Book
- Buster Witwicky
- Sparkplug Witwicky
- Spike Witwicky
- Jesse
- "O"
- Mr. "O"
- G.B. Blackrock
- Josie Beller, aka Circuit Breaker
- Donny Finkleberg aka Robot-Master
- Walter Barnett
- Rollie Friendly
- Dr. Biggles-Jones
American Television Series
- Spike Witwicky
- Sparkplug Witwicky
- Daniel Witwicky
- Carly
- Chip Chase
- Dr. Archeville
- Raul
- Hassan (Prince Jamal)
- Lord Chumley
- Sean Berger
- Abdul Fakkadi
- Dirk Manus
- Dr. Gregory Swafford
- Dr. Mark Morgan
- Jessica Morgan
- Marissa Faireborn
- Dashiell R. Faireborn (Flint)
- Old Snake (Cobra Commander)
Japanese Television Series
- Spike Witwicky
- Sparkplug Witwicky
- Daniel Witwicky
- Carly
- Chip Chase
- Dr. Archeville
- Raul
- Hassan (Prince Jamal)
- Lord Chumley
- Sean Berger
- Abdul Fakkadi
- Dirk Manus
- Dr. Gregory Swafford
- Dr. Mark Morgan
- Jessica Morgan
- Marissa Faireborn
- Dashiell R. Faireborn (Flint)
- Old Snake (Cobra Commander)
- Kenji
- Makoto
- Doctor Gou
- Gou Shuuta
- Minerva
- Lightfoot
- Leftfoot
- Ranger
- Roadking
- Ginrai
- Clouder
- Wilder
- Cancer
- Bullhorn
- Hydra Darkwings
- Buster Darkwings
- Giga
- Mega
- Jean
- Patty
- Irumina
- Joyce
- Rami
- Solon
- Akira