In early 2015, Z-13 was selected to be part of an experiment to give humans gills, using DNA strands from a blue whale, ███████, a sea snake, a great white shark, a female anglerfish, a silver spinyfin, and a mantis shrimp. Whilst the experimentation was a success and Z-13 gained the ability to breathe underwater, the obvious visual and bodily side effects left much to be desired.

He was a prisoner for murdering 9 people but he was found to be innocent, but was never released from the blacksite