Yup, there are octopus mutants. And they have tentacle penises. And will grab onto anything they can reach with any of their tentacles.
The Octopus Guy's body is covered in gray, tough, slimy and slightly rubbery skin. His head is boneless and flexible, with huge round eyes and a short sharp beak in place of a mouth. His body is seemingly
boneless, but dense strong muscle allows it to keep a vaguely human shape. He has 2 nipples. His arms are basically two long tentacles, complete with suckers, though he has a vaguely hand-like appendage. His legs are a set of four thick strong tentacles lined in suckers. Coming from his backside are a pair of long strong tentacles lined with suckers, his ass hidden between them.