Who is blond in the hangover?

In "The Hangover," the character Alan Garner, played by Zach Galifianakis, is often associated with a humorous blonde wig in certain scenes, particularly during a memorable moment when he tries to pass as a woman. However, the main characters do not have blonde hair; the movie primarily features a group of friends who experience a wild night in Las Vegas. If you're referring to a specific character, it could be that you mean the character Doug, portrayed by Justin Bartha, who has light brown hair.