Splitsville..personallity...

[HeroGM]

I'm trying to remember how you would do someone with split personality, especially one who's powers are only in one identity (I'm thinking Aurora from Alpha Flight for the longest time).

[dsatow]

Multiform with no conscious control or accidental change.

[assault]

The non-powered form should pay for the multiform though. Otherwise you are paying points to be less powerful.

 

If power availability isn't involved, it could be a physical limitation.

[Hugh Neilson]

Accidental change?

[Watchman Mk. IV]

Sure, if the powers don't change but the psychology does...Humble Harold becomes Homicidal Hal.

[Cassandra]

It might be a Physical Limitation is the character has no control over the change.

 

Rose Forrest had no idea that she was secretly the Thorn, but the Thorn considered Rose her sister who needed to be protected.

[Hugh Neilson]

Again, Accidental Change. 

 

Rose accidentally changes into Thorn, and Thorn accidentally changes back. 

 

Humble Harold (who either has no powers, or is unaware of them) becomes Homicidal Hal (who has powers, or simply knows how to access those powers) under relevant triggering conditions.

[HeroGM]

I was thinking Accidental Change or modifying Berserk/Enraged. I went with Accidental change and some OIHIDs. She doesn't really change form as much as personality - at times she may even use powers she's unaware of in her non-super id (i.e. waking up in the middle of the air, or striking someone at super-speed as a gut reaction). Also playing with the idea of there being a "third" real personality that's a mix of the two that comes out every once in a blue moon.