Doomsday device is a term used in professional wrestling to reference a tandem move in which one wrestler hoists the opponent on their shoulders so that they are facing in the same direction in what is known as the electric chair position, while another wrestler climbs the ring post to the top turnbuckle and delivers a flying attack on the opponent.
The move was introduced by the tag team The Road Warriors, who were sometimes also known as the Legion of Doom throughout their careers.[1]