Gray Fly is a minor villain in JoJo's Bizarre Adventure: Stardust Crusaders. He is an assassin sent by DIO to attack the group aboard a plane flying from Japan to Cairo. He is a mass murderer who has killed people by the hundreds and got paid for it, even before he was loyal to DIO. One incident in particular where a plane crash killed 300 people in England was rumored to be his doing. His Stand is known as the Tower of Gray, which resembles a stag beetle about the size of one's hand.