Guybrush Ulysses Threepwood is the main character of the Monkey Island series of computer adventure games by LucasArts. The voice of Guybrush is provided by actor Dominic Armato in the third and fourth games. Though a mighty pirate by his own account, it is a running joke throughout the games for characters to hopelessly garble Guybrush Threepwood's unusual name, either deliberately or accidentally, with variations including "Thriftweed", "Peepwood", "Gorbush" and "Threekwood".
He is also frequently referred to by the nickname of "Fancy Pants". The origin of the name "Guybrush" comes from Deluxe Paint, the tool used by the artists to create the character sprite. Since the character had no name at this point, the file was simply called 'Guy'.
When the file was saved, Deluxe Paint automatically appended the extension '.brush'; before the designers could think of a proper name they got used to referring to 'Guy.brush' when talking about the sprite and decided to use it as the protagonist's actual name. "Threepwood" was the name of Dave Grossman's RPG character and was picked through voting. The name comes from P. G.
Wodehouse's family of characters including Galahad Threepwood and Clarence Threepwood, 9th Earl of Emsworth. Guybrush's age is not strictly defined in the games, except for the first installment. When first asked his age by Elaine in The Secret of Monkey Island (which is not a multi-choice dialogue in the game), Guybrush quickly responds that he is twenty-two years old.
Ever since, his real age has only been hinted to in the following games.