Jonah/Runaways

Jonah is a fictional alien and a recurring antagonist featured on the Hulu TV series Marvel's Runaways. Played by actor Julian McMahon, he was introduced in the season one episode, "Kingdom".

Overview
Jonah is an alien whose space ship crash-landed on Earth sometime in its prehistory. Over the ensuing millennia, his only driving goal has been to unearth his ship, repair it, and leave the planet.

Jonah has maintained longevity, but also goes through periods of biological entropy, which requires constant rejuvenation. This is achieved through the efforts of the Church of Gibborim, which utilizes human sacrifice in order to regenerate Jonah's cell tissue.