The Jetsons buy a Thinko machine that gives out a wishes temporarily. The machine breaks giving George super strength until it's fixed George attempts to be a superhero but causes property damage and finds out being a superhero with super strength isn't as fun as he thought it would be. Mr. Spacely fires George for destroying part of Spacely Sprockets building. A wrestling promoter hires George to fight the undefeated Jupiter Juggernaut. Mr. Spacely bets his entire fortune on Jupiter Juggernaut to win. George's superpowers give out mid-fight, causing him to lose.
- Jane Jetson
- George Jetson
- Elroy Jetson
- Nebulous Nifty sales robot (only appearance)
- Judy Jetson
- Jane's mother (mentioned only)
- Pookums (only appearance; no lines)
- Pookums's owner (only appearance)
- Miss Galaxy
- Mr. Spacely
- Dusty (only appearance)
- Jupiter Juggernaut (only appearance)
- Mrs. Spacely (mentioned only)
- Orbitty doesn't appear in this episode.