User blog comment:Drakan95/BoJack Horseman vs Mr. Ed. Epic Rap Battles: Cartoons vs History. Season 1.5 Premiere/@comment-3401602-20150806191254/@comment-3401602-20150806191844

It was a suggestion, not a guess.

I'm aware of, but don't get, the Batman vs Sherlock thing since Batman didn't start from or is most well known from a cartoon.