Ordinaryundone said:
Discounting ultimate/uber fights like WEAPONS and such, I assume? Lost Number from FF7 is pretty tricky if you aren't ahead of the level curve when you first meet him. As is the book monster in Lindblum Library in FF9 (provided you fight him on Disk 2, when you are there the first time).
The forest dragon, the one that gave you all those nasty status effects, from FFXII was pretty bad too.
How fitting. I beat Lost Number on my No-Death, Role-Variant playthrough of FF7 last Thursday.
The cheating bastard one-shotted Barret in the back row from full health with Barrier up (his super attack crit'd, naturally), forcing a restart of that fight.
Shows me for playing Active instead of Wait...
Overall...ignoring Super Secret Bosses where the objective is just to break out overpowered combos until either they, or you fall over and End Bosses (similar, but to a lesser degree):
Velius/Wiegraf in Chapter 3, or Marquis Elmdore (both from FFT.)
Those are both mandatory Story-Bosses, and they are
complete assholes the first time you face them.
Seriously. Having Draw Out with high damage, Blood Suck, Teleport 2, and obscene evasion is bad enough, but then giving him Celia and Lede ("Reddy"..whatever) as backup pushed Elmdore over the top.
(of course, you get the solution in El Cid...unless your forgot to equip 108 Beads on him and he gets Blood Sucked on the first turn, then it turns into the Vampire Batman affair, which is to say "YOU BE FUCKED, SON")
Wiegraf is just a regular asshole with cheese attacks and stupidly long range for them, but easily done in by rapid/mass damage combos. The fact his is a two-part battle that requires real planning to succeed at both puts him above just about every other boss but Elmdore.