"Now, behave, won’t you?  Won’t you, Fred? And you, George?” 
     -- Molly Weasley

essay: George Weasley by Jana Tucker

Fred and George are sons of Arthur and Molly Weasley. They are both very clever magical inventors. They are also very clever practical jokers. In fact, their ambition when leaving Hogwarts is to open a joke shop to sell some of their inventions. They call their fledgling company Weasleys' Wizard Wheezes. They entered Hogwarts in September, 1989, and were sorted into Gryffindor. 

Fred and George are very similar in personality. The two find themselves at odds with their mother quite frequently, partly because she doesn't think they take things like school work seriously enough and partly because they just enjoy pestering and teasing her. They greatly enjoy badgering Percy as well, whose personality is completely opposite from theirs. They like to be the life of the party and the center of attention. Once they force-fed a Fillibuster Firework to a salamander in the Gryffindor common room, for example, just to see what would happen--and to create a scene. They are also very sneaky and spend a lot of time breaking rules and exploring areas of Hogwarts castle and grounds that students aren't supposed to enter. They have a knack for finding secret passages; they found one their first week at Hogwarts, behind a statue of Gregory the Smarmy on the second floor. 

Their frequent escapades and shenanigans get them into plenty of trouble. Argus Filch has an entire file drawer devoted to the rule-breaking of Fred and George, and Hagrid says he's spent half his life chasing the twins out of the forbidden forest. When the Goblet of Fire was charmed with an Age Line so that no one under the age of 17 could enter the Triwizard Tournament, Fred and George took an Aging Potion to try to fool it. The attempt failed, and they were left with long white beards for their trouble. They tend to be disrespectful to teachers in general, even going so far as to throw snowballs at Quirrell's turban.

Early in their career at Hogwarts, Fred and George were in trouble as usual and were in Filch's office when they noticed a drawer marked "Confiscated and Highly Dangerous." That was all the incentive they needed. They grabbed the first thing they could from the drawer and in that way discovered a most unusual map of Hogwarts. It was the Marauder's Map and they considered it to be the secret of their success over the years. In 1993, they gave the map to Harry Potter, saying that they didn't need it anymore.

The twins play Quidditch for the Gryffindor team. They are such good Beaters that they have been described as being almost like human Bludgers themselves. Their best friend, Lee Jordan, commentates the matches. 

Fred and George's birthday is in April. They have red hair and are stockily built.