Bio: An "Infinity Warp" created by Gamora when she came into possession of all six Infinity Stones. She essentially folded the universe in half, creating "warps" of existing people in the universe (where two people were merged together to create a single new person). Iron Hammer is a combination of Iron Man (Tony Stark) and Thor (Thor Odinson).
Notes: Sigurd Stark was his taken name on Earth after having his memories stripped bare. It was revealed in Infinity Wars: Iron Hammer (2018) #2 that his true name is Stark Odinson.