Frank and Dummie are a good duo. I'm going to rate them separately.
Frank: His new move is very fitting, and his ground bounce is cool to mess with too. He finally has a nice battle move to! The Super ground
bounce will be more helpful then the dodge roll for sure! Nothing much to really say about him. 4/5 he gets!
Dummie: Dummie is basically that oc that feels forgotten. It's perfectly fine that he didn't come back with new moves... but he literally feels untouched, other than the extra abilities for the shields. His recurl is very awkward to use and time, and does not fit too well with the triple jump. His battle move isn't very fitting either, I would give him a 1/5 alone. I would love to see a more controllable recurl in the air if you can!