Ryotknife said:
Tales of Vesperia, Gattuso boss (basically a gaint wolf). He is one of the first few bosses (about...5 hours into the game?), and he is largely considered to be the most difficult boss in the game. I would put him on line with some of the optional bosses that are typical in RPGs.
Im pretty sure he is the third boss in the game in fact. He can two shot party members, and spawns pretty difficult mobs.
Cerberus from Devil May Cry 3....and actually from Kingdom Hearts 1 as well. In both of those cases he is the second boss (possibly third depending on what path you take in KH)
First playthrough I went through the game on hard since this wasn't my first Tales game, I knew the combat, I had beaten a lot of the harder bosses on the most difficult settings in previous games. Except for this boss. I tried beating him on hard. Nope. I tried beating him on normal. NOPE. I tried beating him on easy and I got it with a little difficulty. Damn that thing!
OT: To add something for myself I would say the first boss of Resonance of Fate. Now that game has a very weird difficulty curve altogether. You can breeze through a boss battle using two turns (yeah, your 3 characters may not be needed to beat a boss) then you get killed against normal enemies the next moment.
However this first boss took me a long time to beat. I died, retired, died, retried, checked guides, walkthroughs, video walktrhoughs and then finally just went all out, using all my molotov cocktails, spraying him with the machine gun, using tri attack, blowing up his fuel supply while he was standing close enough to be caught in the blast. Yeah, it took a lot out of me to win this fight and up until this part it had been fairly... OK I guess, not easy, but manageable as long as you treated every enemy as a possible source of certain death.