Hiss13

I had Throh. My Throh was Hydreigon's worst nightmare. It tanked blows and hit hard. My Throh was awesome.

I never had much trouble with cyrus, but facing off that Gyarados was really tense. (Outspeed with Luxray, then hope the guy lands it's attack, THEN hope it is enough to take him out in one shot...).

Ghetsis in BW was really hard indeed. It was almost Reborn-level (if you didn't train a hydreigon yourself)

My friend always had trouble with him, that was probably because his strongest was an Espeon.