@Shepherd
Mind sharing? I had an idea for some of his moves: His final smash is his kill taunt, side tilt or smash is his Yeti Punch, down special is Sandvich, which heals a significant amount once per stock, down taunt is Schadenfreude, among others.
I think he means the actual DLC characters. Apart from Phantom Thieves having Joker as the final opponent, none of the DLC Spirit Board challenges have you fighting Joker, Hero, Banjo & Kazooie, or Terry.