- Garry Chalk
- Â Optimus Primal / ... 26 episodes, 1999-2000
- Scott McNeil
- Â Rattrap / ... 26 episodes, 1999-2000
- Venus Terzo
- Â Blackarachnia 26 episodes, 1999-2000
- Ian James Corlett
- Â Cheetor 26 episodes, 1999-2000
- Alessandro Juliani
- Â Nightscream 22 episodes, 1999-2000
- David Kaye
- Â Megatron / ... 22 episodes, 1999-2000
- Jim Byrnes
- Â Thrust 20 episodes, 1999-2000
- Paul Dobson
- Â Tankor / ... 13 episodes, 1999-2000
- Takehito Koyasu
- Â Optimus Primal 13 episodes, 1999
- Brian Drummond
- Â Jetstorm 12 episodes, 1999-2000
- Kathleen Barr
- Â Botanica 8 episodes, 2000
- Richard Newman
- Â Rhinox-Tankor / ... 6 episodes, 1999-2000
- Elizabeth Carol Savenkoff
- Â Oracle / ... 6 episodes, 1999-2000
- Christopher Gaze
- Â Diagnostics Drone 6 episodes, 1999
- Patricia Drake
- Â Strika 6 episodes, 2000