User blog comment:Drakan95/BoJack Horseman vs Mr. Ed 2. Epic Rap Battles: Cartoons vs History. Season 2 Premiere/@comment-24322797-20151104040156/@comment-5264252-20151105172202

well I mean Greg isn't a side character.

also, Peridot was a much more of a side-villain, the actual villains being Jasper and Yellow Diamond who have absolutely no material, and is potentially being reformed to good in recent episodes.

But in the end, this is Drak's series, so if he wants to, he can use however many characters for whatever series as he wants, and he can choose what characters to use, lol