Star:

Adrian Truss (Admiral DeGill),  Colin Fox (Maximus I.Q.),  Patrick McKenna (Dad),  Catherine Disher (Penelope Lang/Sarah),  Stephanie Morgenstern (Megan),  Len Carlson (Minimus P.U.),  Peter Oldring (Flunkin' Duncan Payne),  Bruce Hunter (Robot X-5),  Kristina Nicoll (Mom),  Dwayne Hill (Dylon),  Rick Miller (Sparky),  Michael D'Ascenzo (Chip Osbourne/Dalton Osbourne),  Tajja Isen (Betty),  Laurie Elliot (Noah)

Title pictures:

Dr. Cerebral and the Stupifactor Ray: Dr. Cerebral with a evil look on his face
Atomic Circus: A poster of Sparky dressed up like a ringmaster. (edit) The second episode's title was a pre-production one. The actual title, as flashed onscreen, is "BIG TOP BETTY." (edit) Atomic Roger appeared briefly in both episodes. (edit)

Betty: Sparky! He's been stupified.
X-5: Are you sure? How can you tell? (edit) Sparky: Oh well, at least I still have my Lucky Cheese! (edit) The Chameleon: You burnt my butt, Atomic Betty! (edit) Betty: No one stupifies someone on my team! (edit) Sparky: Dr. Cerebral's evil ray won't affect me!
X-5: That's because you'll have to have a brain in order for it to affect you. (edit)

You can see Betty smiling in the scene where X-5 makes fun of Sparky for not having a brain. (edit)

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