Superman's movement power states:

KNOCKOUT PUNCH: Superman can use Charge. When he does, he breaks away automatically and all hit characters are knocked back 1 square after actions resolve.

Who are the multiple characters hit when he uses charge? Quake already allows knockback for adjacent characters attacked (at the end of his dial).

Any ideas what this is supposed to do?

If Superman were to gain a power allowing him to hit multiple characters.

For example, if Superman was assigned the Gauntlet, and the Gauntlet granted him Flurry, he could Charge-Flurry, and both characters would be knocked back, if hit.

Additionally, hit characters are knocked back after actions resolve. So, if Superman WAS using Charge-Quake, the characters would be knocked back by Quake, then knocked back AGAIN by Knockout Punch-- potentially dealing Wall damage twice!

I am sooo rolling for Mjolnir with this dude now!