I think the craziest RP I've seen their is the mate center. They're always there, and I think it's really weird. Why do they do this? i don't know. That mate center though....
They're not a role play, they're there to help other people get a mate, or just to have fun. Even if it seems pointless, it's better than having TONS of mate beggars. At least there that's where they can gather and see what happens.
I think the craziest thing in Bonfire that I've seen over the years is a rock role play. Believe me, I was stunned as well, but no, they were rping rocks...
Craziest character... I can't name any, they're mostly pretty crazy by my point of view. I guess it has to be the fandom characters, since every fandom character looks different than the other person/people that have those characters. Not to mention, some don't even look like them.