07-04-2022, 01:29 PM
On TV, the closest thing I can recall is an episode of Star Trek Voyager where the characters Tuvok and Neelix were merged by a transporter accident. The resulting character, who called himself Tuvix, was perfectly content with the result, but the captain ordered him split back against his will because she decided the individual characters were too valuable to the ship. As I recall, this was a very controversial episode in fandom.