
Norrin Radd is an astronomer on the alien planet Zenn-La. After Galactus arrives to consume Zenn-La, he agrees to spare the planet if Radd becomes his herald. Now, Radd is granted a minuscule portion of Galactus’ Power Cosmic. Radd’s body is covered in a silver-like metal. And, Radd is given a silver surfboard to travel the cosmos. He is now the Silver Surfer.
It is Radd’s job to travel the universe and find suitable worlds for Galactus to consume. Sometimes, those worlds have life on them. That is the price Radd must pay for protecting his home world. Norrin Radd is now the Silver Surfer, the immortal, powerful herald of Galactus.