Here is a list of the top 5 Simpson’s supporting actors…Original article (top 10)
Comic Book Guy
A parody of every self-employed, middle-aged man who gets away with working in shorts and a T-shirt, Comic Book Guy runs the Android’s Dungeon & Baseball Card Shop, where he enjoys lording it over pre-teen kids – he can tell them everything about every comic ever made. He has a master’s degree in folklore and mythology – for his thesis he translated Lord of the Rings into Klingon – but his black-and-white worldview separates everything into two categories: “Best [insert noun] Ever!” and “Worst [insert noun] Ever!” Although he lives with his mother, he was once married in an online role-playing game

Troy McClure
A washed-up Hollywood actor, McClure is the smarmy host of infomercials for shoddy products and low-quality educational films – no role is too humiliating. You may remember him from such films as Firecrackers: The Silent Killer, The Verdict Was Mail Fraud and Locker Room Towel Fight: The Blinding of Larry Driscoll. His acting career went downhill, due to some unusual proclivities: “Gay? I wish! If I were gay there’d be no problem! No, what I have is a romantic abnormality, one so unbelievable it must be hidden from the public at all costs.”

Ralph Wiggum
The son of the police chief, Ralph is a dim-witted kid who wants to be a caterpillar when he grows up. A guileless oddball, Ralph is cheerfully oblivious to the world around him – and his own limitations (“Me fail English? That’s unpossible.”). His favourite food is school supplies, especially glue, and even though his teacher, Mrs Hoover, has little patience with him (“The children are right to laugh at you, Ralph”), he is given special treatment because of who is father is. Without knowing what a diorama is, he wins the Diorama-Rama contest with his unopened Star Wars action figures

Ned Flanders
Homer’s neighbour is a wearingly devout evangelical Christian: “I’ve done everything the Bible says – even the stuff that contradicts the other stuff!” Flanders is also a self-appointed watchdog of the “horror of free expression”. When Kent Brockman drops the F-bomb live on air, he takes to the internet: “I’m imploring people I’ve never met to pressure a government with better things to do to punish a man who meant no harm for something nobody even saw.” He attributes his youthful appearance at 60 to “the three C’s: clean living, chewing thoroughly and a daily dose of vitamin church.”

Lionel Hutz
Springfield’s discount attorney runs a practice called “I Can’t Believe It’s a Law Firm”. He once represented Marge without wearing any trousers, and didn’t seem to have grasped some of the courtroom’s rudimentary rules. (Judge: Mr Hutz, are you aware you’re not wearing any pants? Hutz: Uh, your honour, can I call for one of those bad trial thingies? Judge: You mean a mis-trial? Hutz: Yeah… that’s why you’re the judge, and I’m the law-talkin’… guy.) Frequently sued for malpractice, Hutz is also a pioneer of alternative billing: “Cases won in 30 minutes or your pizza’s free!”.