9.5
Forretress makes me think of my paramour Steven Stone in HG SS, anything remotely connected to him is good. More to the point though Forretress is a classic. You can toxic your opponent, protect and laugh as they try to break through your enormous defenses. He can set up whatever you want, take your pick of the hazards stealth rock, spikes, toxic spikes? With Sturdy he can always get it up, even a fire move is not an immediate threat. He can also rapid spin away anything in your team's path. If necessary he hit wear it hurts with a monstrous stab gyro ball. Great Pokemon.
Leafeon?