The Silver Surfer is a humanoid alien with metallic skin who can travel through space with the aid of his surfboard-like craft. Originally a young astronomer named Norrin Radd on the planet Zenn-La, he saved his homeworld from the planet devourer, Galactus, by serving as his herald. Imbued in return with a tiny portion of Galactus's Power Cosmic, Radd acquired vast power, a new body and a surfboard-like craft on which he could travel faster than light. Now known as the Silver Surfer, Radd roamed the cosmos searching for planets for Galactus to consume. When his travels took him to Earth, he met the Fantastic Four, who helped him rediscover his nobility of spirit. Betraying Galactus, the Surfer saved Earth but was exiled there as punishment.