Terrax is a Herald of Galactus in the Marvel Comics universe. The character, created by Marv Wolfman and John Byrne, first appeared in Fantastic Four #211 in October 1979. Within the context of the stories, Terrax rules his homeworld before being brought into Galactus' service. He is later dismissed, and travels the cosmos.
Read more about this topic: Tefral The Surveyor