Power to enter or leave a state where one has super powers, while their normal identity normally does not.
Civilian Form (if their super-self is the true form)
In some cases the user is a normal human or normal for their species until they activate this power. The user may gain a new costume or may have their body completely change into a new form. Unlike a secret identity, the user loses their powers while outside of this form, and unlike a Super Form the user is not increasing their power, but gaining it. Some users may have powers out side of their Powered Form that's different from their true powers.
Keep their powers hidden in normal form, but unlock them once transformed.
May be able to use a partial amount of their power.