Dual Persona (character idea)
Here's one for you players that like the idea of a dual personality character (ie like jeckle/hyde, doppio/diavolo) The player has two people to there mind. Weather this be from magical manipulation on there body, mental disorder, physic influence & or ghost tricks. Non the less this body contains two people in it & they tend to switch out every so often. Due to the way there body is wired they can't just both control the body at the same time & thus one will become in-control if curtain events happen to the player. Sometimes they switch due to a stress limit, battling, when a something reminds one of a traumatic experience, & or one of them only comes out when close to death. Nonetheless the two people tend to be very different sometimes they are even polar opposite. If you rely wanna double down on the concept, ask your dm if you can make different stats for when they swap.