Wiegraf is a character in Final Fantasy Tactics on the PS1/PSP that doesn't start out as a boss, but rather has
alot to do with the first half of the game. Though the battles against wiegraf are not necessarily boss-fight
tough, they are above normal. Consider them like a really tough miniboss. Fights with him are way scattered
throughout the story, but every time he appears you know something cool is gonna happen.
I'f you don't know the story for FFT I recommend you play this, now. It's not only my favorite story in a final fantasy game, but also this is my favorite FF period. Wiegraf is the leader of a group of terrorists formed after a 50 year war that doesn't get paid what they're promised, The Corpse Brigade. They're a pretty big a group of soldiers who all they really want is to feed their kids, really. He is such a character that tries to steer his men away from kidnapping a marquis for ransom, after disobeying wiegraf something not so cool happens to these rebels gone rogue, check the video.
So you can see how he's a man of principle, and he's just really caught up with this whole war thing. Later in the game another one of the rebel troops kidnaps Ramzas (the hero/you) sister in order to escape. And while you go on the hunt for him confront Wiegraf's sister, Milluda, and eventually slain her. You catch up to Wiegraf for an awesome face-off.
Eventually Wiegraf arrives at his sisters grave to avenge her death, hating what all the aristocracy has brought upon his friends and family. It is here that he gets his ultimate chance for revenge and gets offered to join the church (remember that the church had awesome power in old times) as a holy knight, to turn the tide and help those in need. Blinded by his hate he joins them for a chance to kill Ramza and gets sent on a hunt for the virgo stone which they eventually take, sacrificing his soul with his last breath to said stone he becomes the evil entity of the Virgo stone and escapes to face off some other time.
The Moment: After arriving at the castle where Wiegraf is garrisoned you get to duel against him 1 vs 1 this battle is one of those OMFG should've grind'ed for an hour before this, as you have no real 'special' powers. And he well....hes a fucking HOLY KNIGHT. I remember that on my first play through I had to start the game
over because I saved right before this fight (without access to world map) and I'm a 1 save file kind of dude. After a lot of luck you defeat him, he turns into Virgo and you get to kill him for real this time(with all your party).
I didn't go into the whole 'Virgo' thing because thats not how I like to think of Wiegraf. When he was virgo everything cool about him was lost, he was blinded by rage, blood lust and revenge. Wiegraf was at his best when killing people for not doing what was right. He fought for what was right since the beginning but destiny had a cruel way of turning his path. All he really wanted was justice, is he really the 'bad guy' ?
So there, I don't really think these were HARD fights but they definitely were among the best, especially with all the emotion surrounding them. I salute thee, Wiegraf. For more detail on the whole "that one mook" posts checkout Ckarasu's post HERE
More info on Wiegraf, since I don't feel I'm doing him any justice HERE