User blog comment:JKGame/Scrooge McDuck vs Finn the Human: Epic Rap Battles of the Universe/@comment-34129479-20181024005125

I'd say some of the lines in this one a little long, but pretty solid overall! I'll give it to Scrooge McDuck.

As for suggestions

Gloriosa Daisy & Timber Spruce vs Piccolo & Gohan (Couldn't think of anyone else)

Big Mac vs Little Mac

Princess Cadance vs Huey Lewis (because Power of Love)

Samhain vs Jack Skellington