The 5th round includes another twist - the round begins with each player revealing their superhero identity.
In clockwise order starting with the player to the left of the dealer, each player chooses one of their two superhero cards (which up until this time have served as reference cards), reveals it face up on the superhero space of their player mat, and gains its benefit.
You discard the unchosen superhero cards.
Abilities on superhero cards don't need to be charged and are always in effect.