Hero Overview

Ramon Guevera "Sheen" Estevez is one of Jimmy's closest friends and one of the main protagonists in the television series. He is also the major protagonist in Planet Sheen. Sheen's obsession with Ultra Lord is one of the running gags in the series. He is shown to have many Ultra Lord action figures, knows a lot of the trivia from the show, and wears an Ultra Lord t-shirt. His love for the superhero was noted in the original film, and was carried on throughout the course of the series.

Sheen was voiced by comedian Jeff Garcia.

Jimmy Neutron

Sheen is the tetartagonist of the movie and the dueteragonist of the series.

He is a big Ultra Lord fan. Even so to be obsessed with it. Sheen is Jimmy and Carl’s best friend, and Libby’s boyfriend. Although Libby didn’t like Sheen, they became a couple at the end.

However in Planet Sheen, his new girlfriend is Aseefa.

Planet Sheen

In Planet Sheen, he was the main protagonist on it. In the first 18 episodes of the UK Version of Planet Sheen, he has his blank flank. In the last 8 episodes, Sheen got a new shirt. In the USA's first episode, he has his blank flank. But in the last 25 episodes, he got his blank flank.


  • Sheen is 11 years old.
  • Sheen is of Mexican descent.
  • Sheen's name (or nickname, though it gets used as his main name) and family name derive from the family of actor Martin Sheen, born Ramón Antonio Gerardo Estévez. There is arguably a resemblance between Sheen's basic design and Martin's sons, actors Charlie Sheen and Emilio Estevez.
  • Sheen's talking primate companion, Nesmith, is named for musician and video artist Michael Nesmith, a member of the 1960's band, The Monkees.
  • He turned into a Planet Hero when he accidentally flew into Space.


            Nicktoons logo Heroes

Hey Arnold!
Arnold Shortman | Helga G. Pataki | Gerald Martin Johanssen | Phoebe Heyerdahl | Grandpa Phil | Grandma Gertie | Stinky Peterson | Harold Berman | Lila Sawyer | Rhonda Wellington Lloyd | Sid | Brainy | Eugene Horowitz | Nadine | Sheena | Olga Pataki
Rugrats/All Grown Up!
Tommy Pickles | Chuckie Finster | Angelica Pickles | Lil DeVille | Phil DeVille | Kimi Watanabe-Finster | Dil Pickles | Susie Carmichael | Spike | Stu Pickles | Didi Pickles | Grandpa Lou Pickles | Drew Pickles | Charlotte Pickles | Chaz Finster | Kira Finster | Betty DeVille | Howard DeVille | Reptar | Fifi | Taffy | Ranger Margaret
The Wild Thornberrys
Eliza Thornberry | Darwin the Chimp | Donnie Thornberry | Debbie Thornberry | Nigel Thornberry | Marianne Thornberry
Invader Zim
GIR | Dib Membrane | Gaz Membrane | Professor Membrane
Danny Phantom
Danny Phantom | Sam Manson | Tucker Foley | Jazz Fenton | Jack Fenton | Maddie Fenton | Dani Phantom | Clockwork
Rocko's Modern Life
Rocko Rama | Heffer Wolfe | Filburt Turtle | Spunky | Dr. Paula Hutchison
Aaahh!!! Real Monsters
Ickis | Oblina | Krumm
CatDog | Winslow T. Oddfellow | Lola Caricola | CatDog's Parents | Roachie | Mervis | Dunglap | Randolph Grant | Mr. Sunshine | Murray "The Mule" Marconi | Mean Bob | Fred the Flying Fish | Gorilla | Dunlapia | Mr. Sunspock | Mervania | Randolphoran | Lolita 7 | Tallula Headbank
The Angry Beavers
Daggett the Beaver | Norbert the Beaver
The Ren & Stimpy Show
Ren Höek | Stimpy | Sven Hoek
The Adventures of Jimmy Neutron: Boy Genius
Jimmy Neutron | Cindy Vortex | Carl Wheezer | Sheen Estevez | Goddard | Libby Folfax | Judy Neutron | Hugh Neutron | Granny Neutron | Zix, Travoltron and Tee | Nick Dean | Betty Quinlan | Ultra Lord | Jet Fusion
The Fairly Oddparents
Timmy Turner | Wanda | Cosmo | Poof | Sparky | Chloe Carmichael | Jorgen Von Strangle | Mr. Turner | Mrs. Turner | Tootie | Chester McBadbat | AJ | Tooth Fairy | Trixie Tang | Veronica | The Crimson Chin | Alternate Crimson Chins | Crash Nebula | Catman | Turbo Thunder | Flappy Bob | Mark Chang | Mama Cosma
T.U.F.F. Puppy
Dudley Puppy | Kitty Katswell | The Chief | Keswick | KIL-R
The Secret Show
Victor Volt | Anita Knight

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