Cyber Mimicry – The ability to become a computer generated being. The main advantage of uploading your consciousness to the internet and saying good bye to your body is possible immortality.
In Injection (Image), Warren Ellis describes an AI that lives in the internet (Injection V1).
Kevin Flynn in Tron is an example of a character that has this ability.
Elasti-Girl (DC) is turned into a mindless crystal monster in Doom Patrol V1 #97.