User blog comment:DemonicBeast/Trevenant vs Gourgeist. Pokémon Rap Battles Reboot Season 1/@comment-4721185-20161013180022/@comment-4717509-20161014020808

I wanted to do Muk vs Weezing w/ Arbok as third party, as Muk and Weezing are somewhat version exclusives in Red and Blue (you can find them both in the Cinnabar Mansion in both games, but in Red, one's more common than the other, and vice versa)