Sky Pirates are a group that has been known to cause various crimes in the Game and Watch game Balloon Fight.
It is known that Oiram Repus is the group's leader. The manual states that a number of other people work for Oiram Repus and have recently broke him out of jail.
Not much is known about the Sky Pirates, as they are only briefly mentioned in the manual of the game. Oiram Repus seems to be a sort of lizard-like creature, so it is possible that all of them are the same species. The Sky Pirates are enemies of the Sky Police.