Osborn's prison mates include a mad scientist, a "mama alien" who believes our species is a threat to her species, a demon who creates dictators, and a Peruvian "jaguar god" also called "the decapitator." They're all new characters.
The big spider thing is probably the “mama alien” and the girl laying down in the bed is the mad scientist that she mentioned. The empty cell is definitely for Norman Osborn, but the other two are a bit harder to decipher. There are no immediate signs of which one is which. My money would be on the odd-looking thing on the bottom left being the Jaguar God, but the guy sitting on the bed doesn’t seem particularly demonic looking (although it could be a disguise).