User blog comment:Drakan95/Epic Rap Battles: Cartoons vs History. News with Fred Flintstone/@comment-26842383-20150429171937/@comment-5264252-20150429185433

Steven Universe vs Kirby is yessss. For the connection, it's chubby pink kids with yellow stars as their symbols that can change shape, "merge" with other characters, and are still discovering their fullest potential and stuff. :P

And Dan vs Karkat is perfect.