Board Thread:Questions and Answers/@comment-5607612-20141221012731/@comment-26010249-20141221051358

Osmosians are mutations. Some mutated naturally, others inherited the mutations from their parents and a few others, like aggregor, is a result of a lab experiment.

Chronians are species from planet Chronia that misused thier powers and was trapped outside of time and space. Ben might have accidentally ended up to where the Chronians were trapped and was changed into a Chronian himself. Being Originally a Human, Ben might have been immune to being trapped with the other chronians.