Blastronaut

 Blastronaut is a "Hitman Hitman", or a hitman who takes out other hitmen. It first appeared in "Hitman". Blastronaut was bought by the Ice King to take out Scorcher, who he accidentally hired to kill Finn and Jake. It cost $99.95 to order. After being ordered, it locked on to Scorcher and blew a hole into the side of the mountain where the Ice King lives. However, after one attack made by Scorcher, the Blastronaut was sliced open and was revealed to be a naked green goblin. The goblin then jumped off the side of the mountain