FEARIANS

The Fearians are a species which had developed space travel as of the twentieth century. They stand about two meters tall, with a light-blue skin humanoid body on top of which are three pointy heads. They tried in vain to invade Earth circa 1978 with the help of a super-powered terrorist group. They were at the time claiming to come from Venus.

Source: (DC Universe - Not Canon) Challenge of the Superfriends, Season 3 (1978), Invasion of the Fearians