Optimus Prime (52 episodes, 2002-2003)
Megatron / Galvatron (52 episodes, 2002-2003)
Jetfire (52 episodes, 2002-2003)
Alexis (52 episodes, 2002-2003)
Rad (52 episodes, 2002-2003)
Carlos (52 episodes, 2002-2003)
Thrust (52 episodes, 2002-2003)
Starscream / Thundercracker (52 episodes, 2002-2003)
Hot Shot (52 episodes, 2002-2003)
Demolisher / Demolishor (47 episodes, 2002-2003)
Red Alert / Platoon Leader (47 episodes, 2002-2003)
Cyclonus (45 episodes, 2002-2003)
Fred (41 episodes, 2002-2003)
Billy (40 episodes, 2002-2003)
Narrator (39 episodes, 2002-2003)
Scavenger / Frustrated Guy (34 episodes, 2002-2003)
Hoist / Smokescreen (32 episodes, 2002-2003)
Sideways / Nemesis Prime / Pauly (26 episodes, 2002-2003)
Blurr (25 episodes, 2003)
Tidal Wave / Rad's Father (22 episodes, 2002-2003)
Sideswipe (21 episodes, 2002-2003)
Wheeljack (19 episodes, 2002-2003)
Jetfire / Kid in Store / Sean's Father / Shuttle Crewmember / Sparkplug / Subway Train Driver (6 episodes, 2002-2003)
Unicron (3 episodes, 2003)
Kelly Bongartner (3 episodes, 2003)
Rad's Mother (2 episodes, 2003)
Hologram Girl (1 episode, 2002)
Boy at Carnival (1 episode, 2002)
Girl at Bus Station (1 episode, 2003)
Sean (1 episode, 2003)
Decepticon (1 episode, 2003)