This is the latest monster from Pathfinder Unlocked, a blog of free third-party monsters (and some traps and haunts) with a focus on cool boss fights.
Yes, I know Bongo Bongo is a very stupid monster name. I didn’t name it! It’s from Ocarina of Time! I just converted it into Pathfinder.
Nintendo Hand Boss transcends names, really. No point to even calling it Bongo Bongo, the stats work for pretty much any of them.