Jon Cryer stars as Alan Harper on Two and a Half Men. Alan is charlie's less successful younger brother. Alan moves in with Charlie after his divorce from his first ex-wife, Judith.
Alan has weekend custody of his son, Jake, who lives with him at Charlie's. Alan is a chiropractor, yet due to his alimony payments, is struggling and has to depend on his brother.
Alan gets married and divorced a second time to the very young and attractive, Kandi. He's lovable and annoying at the same time.