TV series
Penn Zero is not your average kid - every day, he's zapped into another dimension with his friends to save the world.
Availability
Penn Zero: Part-Time Hero premiered December 5, 2014. We don't have a confirmed streaming, rental or purchase option yet.
Penn Zero is not your average kid - every day, he's zapped into another dimension with his friends to save the world.
Choose an episode, then use the watch options above for the show.
Episode 1
After a recap of the events of the first season. Penn, Sashi, and Boone are sent to a pirate world where whales act as the ships. Penn must get to a treasure before Rippen does, but finds himself teaming with a competitive female pirate in the process.
Directed by Adam Henry, Tom De RosierWritten by Jeffrey PoliquinGuest stars Yvette Nicole Brown, Sonequa Martin-Green
Episode 2
The trio return to the dragon world which finds itself under attack by winged unicorns which threaten to destroy Wingfire Academy. However before the team can fight them, they must get Blaze, who has fallen into a slump from a previous defeat by the unicorns, back on his feet to help them.
Directed by Kathleen GoodWritten by Paiman KalayehGuest stars Maurice LaMarche, Yael Stone, Sean Astin, Tress MacNeille
Episode 3
The trio is transported onto a space ship whose human occupants are set to arrive on a new planet to colonize. However, Penn finds himself in the form of a mouse and must save the ship from a feline Rippen who seeks to plunge it into a black hole.
Directed by Adam HenryWritten by Adam HenryGuest stars Bill Nye, Dee Bradley Baker
Episode 4
The trio find themselves in a fairy world in the midst of a wrestling tournament which Penn and Sashi must win to keep the forest out of evil hands. However, things are complicated by an argument between the two, forcing Boone to try to get them to mend their friendship.
Directed by Adam HenryWritten by Jeffrey PoliquinGuest stars John DiMaggio
Episode 5
Sashi is called in for sensitivity training which Principal Larry forces Penn and Boone to attend as well. The methods seem to work to quell her anger, but soon become a hindrance when the trio return to the underwater world for a mission.
Directed by Tom De RosierWritten by Jase RicciGuest stars Peter Stormare, Maria Bamford
Episode 6
Boone and Sashi have to build a Penn robot to save a world from the forces of evil.
Directed by Adam Henry, Tom De RosierWritten by Kenny ByerlyGuest stars Paul Alborough
Episode 7
Team Zero return to the Ball World to save its past from Rippen.
Directed by Kathleen GoodWritten by Jeffrey PoliquinGuest stars Jeff Bennett, Kari Wahlgren, Jess Harnell, Curtis Armstrong
Episode 8
A return to the Knight World causes issues for Boone when he meets a better wizard than himself.
Directed by Adam HenryWritten by Paiman KalayehGuest stars Pete Holmes, Maurice LaMarche
Episode 9
In a world that is a Rock, Paper and Scissor version of Game of Thrones, Penn's team face a siege by the Scissorian army.
Directed by Adam HenryWritten by Kenny ByerlyGuest stars JB Blanc, Michelle Fairley, Jennifer Veal
Episode 10
Penn's team has to save a ghost from supernatural exterminators Rippen and Larry.
Directed by Tom De RosierWritten by Jase Ricci, Paiman KalayehGuest stars Rena Strober, Jeff Ross
Episode 11
Penn has to take care of The Chinchilla -- which causes problem on their return to Plush Toy World.
Directed by Adam HenryWritten by Kenny ByerlyGuest stars Kevin Michael Richardson, Diana Rigg
Episode 12
When Sashi's parents find out about her real job with Penn and Boone, Penn has Phyllis zap her and her parents into the Outer Space World.
Directed by Adam Henry, Kathleen GoodWritten by Jase RicciGuest stars George Takei, Lauren Tom
Episode 13
A mission in Cereal Mascot World gets weird when the Milkman makes an appearance.
Directed by Tom De RosierWritten by Paiman KalayehGuest stars Paul Reubens, Jeffrey Perlmutter, Maurice LaMarche
Episode 14
Penn's emotions cause problems for the latest mission.
Directed by Tom De Rosier, Kathleen GoodWritten by Jeffrey PoliquinGuest stars Kevin Michael Richardson, Kitana Turnbull
Episode 15
Penn, Boone, and Sashi visit an anime dimension to compete against Rippen in a ninjutsu tournament to bring back an island back with the help of 3 new friends.
Directed by Tom De RosierWritten by Kenny ByerlyGuest stars Hynden Walch, Michael Chandler, Roger Craig Smith, Steve Blum, Brandon Scott
Episode 16
Penn has to stop Rippen from ruining a dinner in a sitcom dimension.
Directed by Kathleen GoodWritten by Paiman KalayehGuest stars Judith Light, Reginald VelJohnson
Episode 17
Penn, Sashi, and Boone must make the Princess Argelbleccht and Grinkon fall in love.
Directed by Kathleen GoodWritten by Michelle Bochner SpitzGuest stars Fred Tatasciore, Brad Caleb Kane, Elizabeth Henstridge
Episode 18
Boone is kidnapped and Penn and Sashi must solve the mystery and find him.
Directed by Adam HenryWritten by Kamon NaddafGuest stars Rena Strober, Vartan Nazarian, Neil Kaplan
Episode 19
Vonnie must rescue Brock from the belly of a giant chicken.
Directed by Kathleen GoodWritten by Kenny ByerlyGuest stars Cree Summer, Marc Maron
Episode 20
Penn, Boone and Sashi must stop Rippen from ruining Middleburg High when he switches bodies with Larry.
Directed by Tom De RosierWritten by Paiman KalayehGuest stars Fred Tatasciore, Jess Harnell, Dee Bradley Baker, Maria Bamford, Brandon Scott, Lauren Lapkus
Episode 21
Boone gets a bad report card from Phyllis, making his parents mad. He tries to fix this while on a mission in the Giant Monster World.
Directed by Adam HenryWritten by Jared BushGuest stars Maria Bamford
Episode 22
Rippen's origin story is revealed for his first day as a part-time villain.
Directed by Adam Henry, Tom De RosierWritten by Kenny Byerly, Paiman KalayehGuest stars Fiona Shaw, Vince Gilligan, Alex Kingston, Yvette Nicole Brown, Sonequa Martin-Green
Episode 23
Penn, Sashi, and Boone must travel to the three most dangerous places in the multiverse in order to free Penn's parents as Rippen plans to conquer the Most Dangerous World Imaginable with Larry and those with him after having to close its portal from the other side.
Directed by Adam Henry, Tom De Rosier, Kathleen GoodWritten by Sam Levine, Jeffrey PoliquinGuest stars Mark Hamill, Olivia Holt, Beau Bridges, Maria Bamford, Sean Astin, Blake Anderson, Paul Alborough, Curtis Armstrong
Episode information updated Sep 21, 2026
Available now in United States
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Thomas MiddleditchPenn Zero (voice)
Tania GunadiSashi Kobayashi (voice)
Adam DevineBoone Wiseman (voice)
Alfred MolinaRippen (voice)
Larry WilmoreLarry (voice)
Sam LevinePhyllis (voice)
Gary ColeBrock (voice)
Lea ThompsonVonnie (voice)
Disney XDUnited States
Disney Television AnimationUnited States