Experiment 625 (voice), (voice), Experiment 625 / Experiment Computer (voice), Reuben (voice), Experiment 625 / Gantu's Computer (voice), Houdini (voice), Experiment 625 / Old Man (voice)
28 episodes
(voice), Dr. Jacques Von Hämsterviel (voice), Dr. Jacques Von Hämsterviel / Experiments (voice), Dr. Jacques Von Hämsterviel / Fibber (voice), Experiments (voice), 627 / Dr. Jacques Von Hämsterviel (voice), Clyde (voice)
20 episodes
(voice), Alien (voice), Felix: Experiment 010 (voice), Richter / Cannonball (voice), Bonnie: Experiment 149 (voice), Bonnie / Felix-Oscar (voice)
19 episodes
Experiments (voice), (voice), Sparky (voice), Tanlined Ice Cream Tourist (voice), Poxy (voice), Mr. Stenchy: Experiment 254 (voice), Kixx (voice), Sparky / Yin / Yang / Slushy / Kixx (voice), Skip (voice)
13 episodes
(voice), Bebe Proud / Cece Proud / Puff (voice), Adult Lilo (voice), Angel (voice), Babyfier (voice), Angel: Experiment 624 (voice)
8 episodes
Mr. Wong (voice), (voice), Bald Tourist / Luau Host (voice), Mayor Kim (voice)
7 episodes
Phantasmo: Experiment 375 (voice), Short Stuff: Experiment 297 (voice), Rufus (voice)
3 episodes
