Erik Selvig

Erik Selvig is a fictional character in the Marvel Cinematic Universe (MCU), portrayed by actor Stellan Skarsgård. He is a renowned astrophysicist and a professor who has appeared in several Marvel films. Selvig first appears in "Thor" (2011) and later appears in "The Avengers" (2012), "Thor: The Dark World" (2013), and other related media.