Mark Pellegrino is excited to play a sinister evolutionary biologistCharlie Jane Anders9/06/13 4:36pm171EditPromoteGo to permalink You might know Mark Pellegrino from, oh... just about every genre TV show ever. He was Jacob on Lost. Lucifer on Supernatural. The only fun character on Revolution. Etc. Now he's playing an evil evolutionary biologist who hunts mutants on The Tomorrow People, and he told us why he's over the moon.