This list is dedicated to a few of the great supporting cartoon characters in recent history. They're so brilliantly written, funny and full of personality that more often than NOT, they outshine the main character(s). Personally, I find some of these characters are far more interesting than the main characters they supported.
They haven't gotten their chance to shine independently, however, I feel that it's only a matter of time before they are in the SPOTLIGHT holding their own.
Creators, Networks, General Execs... Give us spinoffs...
Zapp Brannigan (Futurama)
Sorry Bender, but Zapp beat you on this one. Think of James T. Kirk... Instead of being brave he's a coward that's out of shape, very egotistical, arrogant, bossy and stupid. Yet, I love this character! The chemistry between Zapp and Kif is hysterical. I think a show about the galactic adventures of Captain Zapp Brannigan would be great! As long they use the same voice actors and writers from Futurama - the show would be an instant hit.
The two things I love about the character is that he's delusional, he actually believes he's a "ladies man", coupled with that hilarious speech impediment - simply priceless. He has such a cocky personality that it affects the way he pronounces several words.
Honorable mention to Scruffy the janitor.
Stewart Stevenson (Beavis and Butt-head)
Stewart is the epitome of everything that sucks to Beavis and Butt-head. Still, I couldn't help but like the poor little guy. Stewart may have come off as the wimp, the nerd, the momma's boy of the show but he was the most sane character in that entire show.
He was the voice of reason when he hung out with Beavis and Butt-head. Unfortunately, Stewart (and his family) were always being tormented by Beavis and Butt-head. If you haven't watched the show and you have no idea who Stewart is? Think of a stereotypical young (ages 12-14) conservative Christian boy that is constantly a nervous wreck. Trust me, it's pretty funny. Look at the picture of Stewart above.
If Daria or "diarrhea" could get her own television series why not Stewart?
Milhouse Van Houten (The Simpsons)
I may not like the show anymore, but there's no denying that The Simpsons has some of the best supporting characters! In my opinion I feel like a show about Milhouse would be a step in the right direction for Matt Groening. As the best friend of Bart Simpson, Milhouse is usually getting caught up in some of bart's shenanigans. Don't let the giant nerdy glasses fool you. Milhouse has "average" intelligence, poor social skills and he's very gullible. Also, he kind of comes off as a whiny, smartass. He is the unfortunate "loser" of the bunch.
Besides those negative traits Milhouse is unusually charming and a hopeless romantic. To me that's what makes me like the character so much more. I see a lot of potential in a Milhouse television series.
Dale Gribble aka "Rusty Shackleford" (King of the Hill)
Dale Gribble is one of my favorite characters on King of the Hill. There's never a dull moment with this chain-smoking, pest control, conspiracy nut-job! A Dale Gribble show would be filled with so many great catchphrases: "Wingo!", "She-she-sshhaa", "The name's Rusty Shackleford" and "s'go!". What can I say? Mr. Gribble is one of the coolest Texans (second to Boomhauer).
What if Dale was actually a former spy and actually had his brainwashed by the government... Perhaps he's not all that crazy in the head.
George Liquor (Ren & Stimpy)
There's a reason why Ren & Stimpy is on my top 5 favorite cartoons list. The show has an abundance of great and memorable characters! Out of all the wacky characters from the show there's no one like Geroge Liquor. The pro-American/far-right extremist (weird combination, I know), psychopath. Don't ever call him a "Democrat" or he'll unleash infinite rage upon you! He believes all Republicans are communists too. George Liquor is a "Man's Man". Only appearing in two episodes he became an instant favorite among Ren & Stimpy fans. His in your face attitude is intoxicating to watch, and you'll always end up laughing out loud when you watch an episode starring George Liquor.
Dracula (The Grim Adventures of Billy & Mandy)
The creators of The Grim Adventures of Billy & Mandy pretty much brought Blacula to Cartoon Network. As a child Dracula was one of my favorites on the show. This is a senile Dracula that's past his prime and spends most of his time in a retirement home while at the same time trying to hook up with "foxy ladies". Dracula is Grim's childhood hero on the show. In reality Dracula is nothing but a selfish old man that's always calling Grim names: "Skeleton-Man" and "Big Dummy". He doesn't like when people try to assist him. Dracula has a strange obsession with wanting people (especially women) to watch him dance.
I love the way the character was handled on the show and I think a Dracula televisions series would be absolutely hilarious!
Leopold "Butters" Stotch (South Park)
Butters popularity grew immensely once he temporarily took the place of Kenny in Season Six. Butters in my opinion, has the biggest chance on the list to actually have his own television series. He's a character that has proved he can hold his own in an episode (without the help of main characters). There have been a few episodes where Butters outshines the main characters - yes, I said it...
Leopold "Butters" Stotch is the "innocent child" of the fourth graders. He may be used by Eric Cartman a lot, but on the inside Butters has a dark rebellious side that would make Cartman shit himself. Butters is easily a lovable, funny character that's filled with so much personality.
Honorable Mentions: Randy Marsh, Eric Cartman, Tweek and Kenny McCormick.