Omar, the four letter answer to the crossword clue 'antihero on 'The Wire'', is a fan favorite character from the HBO series. He is a stick-up artist and drug dealer who is known for his Robin Hood-like behavior, as he often steals from drug dealers and gives to the poor. He is also a vigilante who seeks justice for those who have been wronged. Omar is a complex character who is both feared and respected by those in his community.