Abe Simpson is Homers father.  He is a really lousy influence on Homer. Abe now lives in a retirement home, or the Simpson's house.
Mr. Burns is the millionaire of Springfield.  He owns the Nuclear Power plant and is rude and mean to all his employees.  He really doesn't have very many friends.  

Smithers is Mr. Burn's pet/ assistant.  He seems to know the Power Plant and all the employees well though.  He tells Mr. Burns all that he needs to know to make a decision on an employee.
A fat cop who even refers to himself as a pig.  He is the local law enforcement in Springfield.  His son is Ralph.  His real first name is Clancy.

Ralph is the stupid kid.  He is sort of funny and gets great lines in the show.  He is in the same grade and class as Lisa.
Apu's full name is Apu Nahasapeemapetilon. He is the owner of the Kwik-e-mart.  He is from India.  He use to be an illegal alien but got that cleared up and has a family with octuplets.  

Moe owns the local beer tavern.  He makes a lot of money off of Homer and other barflies like Barney. He also does many illegal things.
Dr. Hibbert is the main professional doctor in Springfield.  He has a trade mark laugh.  He also tries to diagnose his patients in a funny way.  

Dr. Nick isn't really a very good doctor.  He isn't the brightest, makes a lot of mistakes, and he commercializes things.  DR. Nick is very well known though.
Dr. Monroe isn't a huge doctor.  He takes care of people with psychiatric cases.  The only family he has really failed on was the Simpson's.

Otto is the school bus driver.  He does crazy things too.  He seems to have a decent friendship with Bart.  Him and Homer aren't enemies but sort a friends too. 
Groundskeeper Willie is the schools Janitor and Groundskeeper.  He has a little shack behind the school. He tries to save the children in one episode twice and fails both times.  

Sideshow Bob is now a murderer even though he has never successfully killed anyone.  His main targets is always Bart and Krusty.  Before he became a murderer he was Krusty's side kick.
Krusty is a clown on a local TV show.  He is idled upon by many children including Bart and Lisa.  He also shows cartoons on his show like itchy and scratchy.  

Itchy (the mouse) and Scratchy (the cat), are characters on a cartoon show that Bart and Lisa watch.  It has it's bad parts it drove Maggie to attack homer.
Nelson is the school bully who gives everyone trouble.  He gave Bart a lot of trouble, Lisa a little, and picks on every dork in school.

Revrene Lovejoy is the Revrene at the church.  He does give advice but it's not always good.  He is a very religious person.  
Snake is a local criminal that robs places a lot.  He has robbed the Kwik-E-Mart many times, and other houses.  He doesn't play in many episodes but he's still good at his parts.

Mayor Quimby is the mayor of Springfield.  He accepts Bribes and dates supermodels.  Mayor Quimby is really a bad Mayor but is Funny.
Martin is the school dork.  He is really not popular at all he even wasted a whole episode tiring to be popular.  He is very smart though, and that is never a bad thing.

Kent Brockman is a news reporter for Springfield.  You see him in most episodes telling the news or just being there.
Principal Skinners First name is Seymour.  He is the principal of Springfield Elementary.  He still lives with his mother. He dates Mrs. Krabapel. 

Sideshow Mel is Krustys new assistant.  He really doesn't do much.  He has green hair with a bone in it.  He at least does the tricks sideshow bob wouldn't 
Milhouse is Bart's best friend and favorite person to push around. Milhouse is a main person in a lot of gags on the show.  He wears thick glasses and is sort of a nerd. 

Ned Flanders is probably the most holy person of anyone on the show.  He is very peaceful, and always looks for the best in things.  Ned often say "hideliho", and "okelydokely". 
Herman owns an antique shop.  He is missing one of his arms from a school bus accident, even though he was in the war.  He has a very strategic mind, but is still nuts.

Comic Book Guy never tells his real name.  He owns the local comic book shop androids dungeon.  He is usually calling everything "the worst thing ever" which is sometimes funny.
Mrs. Krabapel is Bart's school teacher and dates Seymour Skinner.  She isn't really a good teacher, drinks a lot.

Fat Tony is the local mafia boss.  He usually tries to talk his way (or lie) out of everything.  He has connections and gets what he wants done, done.
Professor Frink is the the scientist in Springfield.  He invents thing most people don't have or can afford.  Two of his inventions that he made that were used in the show are the warp machines and the time machine.

Manjula is Apu's wife.  She gave birth to octuplets and came from India.  She nags about Apu a lot and what he does.
Hans Moleman has small but funny part.  He made the movie man hit in crotch with football, was a substitute child for Bart, taste like peanuts, and always seems to be in some kind of pain.

Jasper lives at the Springfield retirement home.  He isn't a huge character but has his moments.  He got shot in his wooden leg by Smithers, and usually seen walking around an complaining. 

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