Board Thread:General Discussion/@comment-71.199.102.93-20150307051221/@comment-1031724-20160417174307

Red Skull is dead. In Guardians of the Galaxy it is said that when a mortal touches an Infinity Stone, it will kill them. Red Skull is superhuman but mortal all the same. As the tesseract also holds teleportation powers, it transported what was left of him to Yggdrasil, and even if he survived the trip, he'd likely be dead of old age by now, unless Yggdrasil has some sort of eternal youth powers.