(list) TF2 Freaks: Slender Fortress boss suggestions

uh... idk why the vid is so dark. So this is a list on TF2 freaks who would make great bosses in Slender Fortress. I was playing a couple of rounds a while back and I saw that the MEEM was a boss within the game mode. Then I thought "If the MEEM is in this game mode, then why not other TF2 freaks?" Outtro music - Slendytubbies III: Mutation