The history of Bart Simpson from The Simpsons
Bart is a self-proclaimed underachiever who begins each show in detention as part of the opening sequence. He was born on April 1, 1980 (according to Uncensored Family Album), or February 23, (According to Simpsorama) and was conceived on April 23, 1979. He is easily distracted (even, strangely enough, by algebraic equations). His penchant for shocking people began before he was born: Bart "mooned" Dr. Hibbert while he performed a sonogram on Marge, and moments after being born he set fire to Homer's tie. His blood type is the very rare Double O Negative (OO-) ; only he and Mr. Burns are known to have it.
Bart's interests include Krusty the Clown (he is "Krusty Buddy" number 16302), skateboarding, reading comic books (especially Radioactive Man), watching TV (especially The Krusty The Clown Show and The Itchy & Scratchy Show), terrorizing Lisa, playing video games, helping Lisa solve various problems (e.g. reuniting Krusty with his estranged father), and pulling off various pranks (such as mooning unsuspecting people and prank calling Moe Szyslak at his tavern). Bart also sprayed graffiti under the alias 'El Barto', and regularly frequents the Kwik-E-Mart (for bubblegum and Squishees) and The Android's Dungeon.
Bart hinted that his favorite movies are Jaws and the Star Wars trilogy. His best friend is Milhouse Van Houten.
Bart is a polyglot and can speak several languages with varying degrees of fluency. Though he has not demonstrated the ability since his trip to France as an exchange student, he speaks near-perfect French (as a result of drinking wine laced with antifreeze). He also learned Spanish in a matter of hours in preparation for the family's trip to Brazil. Upon learning that Brazilians speak Portuguese and not Spanish, Homer orders his son to forget what he learned, prompting Bart to strike himself over the head until he forgot the language. Bart also speaks Japanese (which he also learned in a couple of hours in prison along with Homer, and is also shown speaking Japanese, Cantonese and Latin. His advanced linguistic skills may be inherited from Homer, who also speaks advanced languages, including penguin. He was also shown to be a skilled drummer. He is a player in the Mighty Pigs Peewee Hockey League Team. He was also quite capable of firing advanced firearms with a frighteningly immense amount of accuracy, as evidenced when, while at Military School as a result of a prank involving bullhorns, he was given a RGB6 Grenade Launcher by the firing range instructor due to his belief that Bart would have most likely known how to operate handguns, and managed to destroy four out of five targets before one of his shots missed and ended up hitting Principal Skinner's car just as he was about to unlock it, to which Bart implied that he deliberately missed the fifth target and was actually aiming for Skinner's car that time. He later displayed a similar proficiency towards weapons when he managed to hijack a tank by stealing the keys, drive it over to the the park, and managed to shoot down a MLB satellite with with surprising accuracy all by himself, although at that point, he was also under the effects of an experimental drug that was supposed to supress Bart's Attention Deficit Disorder.
Bart can also drive vehicles with surprising skill for his age. He has his own driving license, given to him after saving Springfield from a fire, although he has been seen driving before with a fake license at times. He still possesses it, using it to great effect when he stole Principal Skinner's car to get to Jimbo's house.
He is the most misunderstood Simpson, constantly frustrated by the narrow-minded people of Springfield, who judge him merely by his thoughts and actions. Overall, he is a good boy with a few bad ideas (and one or two that are still being reviewed by the Springfield District Attorney) - Basically, Bart is no different from any ordinary 4th grader. When Bart is about to do something mischievous, he does an evil chuckle.
Bart is also a skilled chef. He cooked a three course meal for his parents and made a dessert.
When he was made Hall Monitor, he also had a great degree of skill in enforcing the law and rules. This trait was later exemplified when he, in a similar fashion to a bouncer, removed Homer Simpson from the premises of the La Maison Derrière after he continuously heckled Marge's ventriloquist performance.