

Gretchen (Megan Cavanagh appears in episode The Retroville 9).this is her second one-shot role as a main character's elder relative, after playing Grandpa's Sister in an ep of Hey Arnold!) Granny Neutron ( Phyllis Diller appears in episode Granny Baby and a few other minor bits.


Coach Gruber ( James Belushi seldom appears).Clark (Mark DeCarlo appears in episode The Retroville 9).Chuck Lestor ( Crystal Scales appears in episode Hall Monster).Chip ( Rob Paulsen appears in episode A Beautiful Mine).Captain Betty (Jim Cummings appears in Monster Hunt).Brobot ( Paul Greenberg appears in the episode of the same name and later The Junkman Cometh).( Phil LaMarr appears in episode Jimmy For President et al) Bolbi Stroganovsky, the resident exchange student from Backthereistan.Betty Quinlan, who also seems to have a crush on Jimmy and makesĬindy extremely jealous ( Kath Soucie seldom appears).Beautiful Gorgeous, the femme fatale ( Wendie Malick appears in episode Operation: Rescue Jet Fusion and "league of villains").Barbarino ( Jeff Bennett appears in episode A Beautiful Mine).Amber (Debi Derryberry seldom appears).Guest characters in The Adventures of Jimmy Neutron: Boy Genius are listed below: Often seen on a skateboard, doing dangerous tricks. Nick Dean, the "cool" kid at school, of Latino descent.Resembles a large bird both in her hooked nose and tendency to squawk. Attracts the oddest men: was married to a werewolf at some point, danced with President Woodrow Wilson and once dated Thomas Edison after Jimmy brought the famed scientist to the future. Winifred Fowl, 5th grade teacher at Retroville's middle school. Also Sheen's girlfriend, by some twist of fate. Somewhat intellectual, and obsessed with electronic gadgets. Loves music andĮxperiences withdrawls when not constantly exposed. Liberty "Libby" Danielle Folfax, Cindy's best friend.In the hour long crossover special, The Jimmy Timmy Power Hour, Cindy develops feelings for Timmy Turner. Usually calls Jimmy Nerdtron or some other such name. Has shown obvious but reluctant friendship toward Jimmy. Cynthia "Cindy" Vortex, Jimmy's rival.Voiced by Jeffrey Garcia, who also won an Annie award for the role. The name "Sheen Estevez" appears to be a reference to the Estevez family of actors - specifically the two members, Ramón and Carlos, who use the screen name Sheen ( Martin and Charlie Sheen, respectively). Sheen is of Mexican ethnicity, but does not have a noticeable accent. The t-shirt depicts UltraLord, a popular superhero within the show that Sheen is obsessed with. Sheen's wardrobe largely consists of a blue t-shirt and jeans. The three are in the same school grade because Sheen was held back. Sheen Juarerra Estevez, Jimmy's hyperactive friend, is twelve years old, making him two years older than Jimmy and Carl.Has an odd taste in women and an even stranger crush on Mrs. He is allergic to just about everything, perhaps including

When his parents expanded their cable lineup, Carl found himself focusing on a channel devoted to llamas he has adored them ever since, going so far as to join a fan club, the Llama Love Society. Carl is known as nervous, timid and suffering from hypochondria at times, he tries to overcome these personality traits in order to appear " cooler" around Jimmy and mutual friend Sheen Estevez. According to canon, Carl was born in 1991. Carlton "Carl" Ulysses Wheezer, Jimmy's neurotic, llama-loving friend.Voiced by Frank Welker, and named after Robert Goddard, rocket pioneer. Goddard, Jimmy's robotic dog, equal parts tool and friend.She is amuzed with the many antics of her husband. Was elected the esteemed name of Towel Boy in Like many of the Neutron characters Hugh has his humerous obsessions. He was once one of the Acorn Lad scouts at a young age, and even rememebers the song they used to sing. He invented a holiday based upon pie, known as Pule (Combination of pie and Yule). Somewhat oblivious and childish, obscured by his uncanny abilities as a salesman and toy inventor. Jimmy and Carl riding in a homemade rocketīesides the title character, the show's characters (and their voice actors) include:
