From Zero to Hero is episode 21a of Comedy World. It premiered on Kids' WB on June 26, 1999.
- Andrew Rannells as PC Guy/Professor Bookworm
- Mike Pollock as Principal Walker/Iron Walker and Radiation Ray
- Mark Hamill as The Pranker
- Jason Griffith as Plutonic
- Josh Peck as Eric/The Bulk
- Dan Green as Dallas/Cold Front
- Gary Sauls as Constantinos/Storm Sentinel and Joey/Captain Aviation
- Edward Felker as Stanley/Dr. Counterfeit
- Adam West as Match Boy
- Grey DeLisle as Match Girl
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