Agent Scarlet

Based on Mission Impossible. You were a male agent of the IMF sent to board a train. Your female agent partner was supposed to put on the mask of the target and impersonate her, but she was incapacitated, leaving you to impersonate her. You put on the mask of the target and an experimental body suit to try to get your male body to replicate her feminine figure. Unfortunately, the experimental body suit went haywire, binding to your very DNA and transforming your body inside and out to the body of a woman.