Jimmy Neutron

Jimmy Neutron's just your average, everyday, tweenaged super genius. He may have an awesomely overdeveloped brain and the ability to create out-of-this-world (literally) inventions, but he's still the shortest kid in his class, and he's still gotta be in bed by 9. More often than not, Jimmy's amazing inventions get him into heaps of trouble. But with his best friend/scientific guinea pig Carl and his trusty robotic dog Goddard at his side, Jimmy always finds the formula or grabs the gadget that gets him (and the rest of Retroville!) out of the toughest tangles!

Goddard

 

Jimmy's proudest invention is Goddard, his trusty robotic dog. Considering he's made of sprockets, circuits and widgets Goddard makes one heckuva man's best friend. Plus, unlike his real-life canine cousins, Goddard can transform into a whole slew of useful tools, vehicles and other gadgets for Jimmy—he's like a high-tech, barking toolbox on four legs. Goddard's still got a few kinks to work out, like the fact that he explodes when Jimmy says "Play dead!" But otherwise, this digital dog is the perfect (cyber) canine companion! Carl Wheezer                                                                       Shy, asthmatic Carl Wheezer is Jimmy's right hand man. Unfortunately, that often means that he's Jimmy's guinea pig. Poor Carl's allergic to pretty much everything, so just breathing is hard enough for him. And yet he still agrees to help Jimmy out with his experiments (even if he usually says "I don't know Jimmy..." first). Carl may get a little scared—and a little messy—riding shotgun next to Jimmy, but he always comes out glad for the ride.
Cindy Vortex

It's not easy being the second-smartest kid in Retroville. Just ask Cindy Vortex. Her competition, of course, is young James Isaac Neutron, inventor of such amazing items as the Girl Eating Plant. Cindy has made it her mission to prove that she's just as smart as Jimmy, and their constant competition produces some seriously sticky situations. But could it be that underneath it all, Cindy's got a little cranial crush?

Sheen

Have you heard of UltraLord? Because if you haven't, Sheen will be offended. And when he gets over it, he'll tell you all about UltraLord. About the UltraLord TV show. The UltraLord action figures. The UltraLord trading cards. The UltraLord comic books. The limited edition, special issue, one-of-a-kind UltraLord toilet seat cover. See, Sheen isn't just obsessed with UltraLord, he longs to actually BE UltraLord. And yet, Jimmy still hangs out with him, which proves that he's as patient as he is smart...

Libby

Cindy's best friend is totally wired. No, not excited—she's pretty mellow—we mean she's outfitted with all the latest electronic gear. From Palms to pagers to cellphones aplenty, Libby is constantly beeping, tweeting, ringing or buzzing. All that electronic energy doesn't seem to affect her, though—she's the perfect calm compliment to Cindy's high-strung personality!