God I want to get into the man v bear discussion, but I'll try to stay on topic.
Do you really think The Hound is the only person that could defeat the Mountain Golem? The Hound is definitely badass, but I think Bronn at this point, especially after The Hounds injuries, is just as good. Very different fighter, but he ain't nobody to fuck wit'. I'm trying to think of a super religious person to fight him, but I'm not drawing any names really. The only person I remember caring much about The Seven was Catelyn Stark and she done died and ain't come back yet.
Maybe Wun Weg Wun Dar Wun will appear and rise to the occasion! Full armored Mountain Golem versus Wun Wun with a fucking 1200lb log. I'd watch the fuck out of that.