Originally Posted by Miken Ayers
Just speculation but is it possible Red Skull entered Asgard bypassing Heimdall's vision, and spent the last 70 years collaborating with Loki?
its possible. im positive Red Skull isnt dead, i think he was just transported to another realm. i dont think he would make it in Asgard without somebody noticing him. if he and Loki have met its probably safer to assume it was after Loki was transported away at the end of Thor