Jimmy Neutron Wiki
Ultra Sheen

Episode 13B
Season 1
Airdate February 17, 2003
Invention The Neturonic Game Pyramid
Previous Party at Neutron's
Next Broadcast Blues

"Ultra Sheen" is a second segment in the 13th. episode of Season one of The Adventures of Jimmy Neutron: Boy Genius.


It's a sunny day in Retroville and Sheen and Carl are arguing about where baloney comes from. Landing next to the two, Goddard opens his mouth out comes Jimmy's voice. Then Sheen and Carl think that Goddard has swallowed Jimmy, but Jimmy tells them that he's on speaker phone from the lab. Then he tells his friends that he created a new invention that they'll love and to come over and bring their favorite video game. Then Sheen opens the door almost immediately afterward and then he's told by Jimmy that his device lets the user be a player in their game. Then he inserts his favorite game, "Ultra Lord vs. Robo-Fiend Mega Battle".

Then Sheen's eager to start playing the game, but then Jimmy warns him that his new device's a prototype, and if Sheen's sent into the game, his only way out is to win a single level. Then Sheen's sent into the video game, but then he's easily defeated by Robo-Fiend, who burns up Ultra Lord and drills Sheen into the ground. Then Jimmy resets the game and then he arrives to help Sheen (leaving the computer unguarded). Luckily, Sheen defeats Robo-Fiend by turning him off and then Ultra Lord sends him flying up into the air.

Back in the real world, Carl infiltrates the lab and then he thinks that Sheen and Jimmy are really CPU's in the game, so he resets the game to Level 7. Then Robo-Fiend becomes even stronger and then he attacks the duo and then they try to tell Carl to stop, and that they're really in trouble, but Carl didn't believe them and then he uses atomic breath to kill Ultra Lord. Then Jimmy and Sheen realize that they can only defeat Robo-Fiend and get back home if they get a power boost from an Ultra Crystal.

While Sheen distracts Robo-Fiend, Jimmy finds an Ultra Crystal, but Robo-Fiend grabs it instead and then he transforms into Mega Robo Fiend. In the real world, Carl inserts his game "Llamapalooza" inside the pyramid and then he's transported inside the video game world. Just as Mega Robo-Fiend's about to finish Sheen off, Jimmy finds another Ultra Crystal and then he throws it to Sheen, who transforms into Mega Ultra Sheen.

Then Mega Ultra Sheen and Robo-Fiend face off in a battle, using their new powers, but they're too evenly matched. Luckily, Ultra Sheen knows Robo Fiend's one true weakness, the European director's cut of Ultra Lord episode 317 revealed that Robo-Fiend's lactose intolerant. So, Sheen grabs a llama and then he sprays milk onto Robo-Fiend's face, thereby causing him to run in agony and then to explode in the distance. After Robo-Fiend blows up, Ultra Lord zooms in and says "Join us next time on a never-ending battle against...evil!" then he gets crushed by Robo Fiend's head and yells "arrgh!" Then Jimmy and Sheen get home and the they decide to leave Carl in the game till after lunch and as they leave Sheen asks Jimmy if he has any baloney.


  • "Taste llama milk, star destroyer!" - Sheen.
  • "No! No! I'm allergic! No!" - Robo-Fiend (runs off and explodes in the distance)
  • "Hey, look at me. I'm Head Growing Out Of The Ground Man!" - Sheen (after losing the game)
  • Sheen: the scent of victory is pungence.... or is that just me?


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  • Sheen refers to Robo-Fiend as "Star Destroyer" before spraying llama milk in his face. This may be a reference to the Star Wars starship of the same name.
  • In the title card, the words "ULTRA SHEEN" are in the exact same font and color as the Sega logo.
  • Sheen says this episodes title in the Planet Sheen episode, Cutting the Ultra-Cord.
  • When Jimmy and Sheen try to tell Carl that they're in danger, Ultra Lord's energy and their shield bars looked like they were empty.
  • When the camera cuts to show the disc for Sheen's game, Sheen is covering up a "T". The "T" is a reference of the ESRB rating, "T for Teens". All of Carl's games have an "E" on it, "E for Everyone". Unlike real life, the letters are lowercase instead of capitals. This was probably done to avoid copyright violation.
  • Cindy, Libby, Hugh, and Judy didn't appear in this episode.
  • The Neutronic Game Pyramid is a spoof of the Nintendo Gamecube.
  • This is the first time Sheen makes a joke about counseling. The next time would be in Nightmare in Retroville.
  • This episode and Party at Neutron's are not available on Amazon Video or iTunes because the latter has the song Go Jimmy Jimmy, despite the fact you could barely hear it and the song was replaced with techno music in TV airings.
    • However, the episode was recently made available on Paramount+, alongside the rest of the series until it got removed on March 24 2021. It also has been made available on the Complete Series.
  • This episode is on the Jimmy Timmy Power Hour 3 DVD.
  • Although this episode was released in 2003, you can actually see "Copyright 2002 Viacom International, Inc” at the end of the credits. This probably means that this episode was produced in 2002.

The Adventures of Jimmy Neutron: Boy Genius Season 1 episodes
When Pants Attack | Normal Boy | Birth of a Salesman | Brobot | The Big Pinch | Granny Baby | Time is Money | Raise the Oozy Scab | I Dream of Jimmy | Jimmy on Ice | Battle of the Band | See Jimmy Run | Trading Faces | The Phantom of Retroland | My Son, the Hamster | Hall Monster | Hypno-Birthday To You | Krunch Time | Substitute Creature | Safety First | Crime Sheen Investigation | Journey to the Center of Carl | Aaughh!! Wilderness!! | Party at Neutron's | Ultra Sheen | Broadcast Blues | Professor Calamitous, I Presume | The Eggpire Strikes Back | Maximum Hugh | Sleepless in Retroville | Make Room for Daddy-O | Beach Party Mummy