Nick Dean

Nicholas "Nick" Dean is the most popular kid located in Retroville whom all the girls dig, who also happens to be one of Jimmy's best friends. He rides a skateboard, doing stunts which sometimes ends up getting him injured, where in the episode Lady Sings the News, Jimmy comments that Nick has broken his leg sixteen times in this year alone. Nick plays the role of a big brother to Jimmy and loves giving him advice, even though Jimmy usually ends up in trouble because of it. Nonetheless, Jimmy and Nick get along well and are very good friends. Nick often gets annoyed with Sheen's constant ramblings about Ultra Lord and usually yells at him because of it. Nick was supposed to be part of the main gang, but then Libby took his place when she started being used more. In the planned season four, he would've rejoined the main cast and further developed his relationships with Jimmy and the rest of the gang. 

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 | Heffer Wolfe | Filburt Turtle | Spunky | Dr. Paula Hutchison Aaahh!!! Real Monsters Ickis | Oblina | Krumm CatDog 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