The only bullshit boss fight I can remember in recent personal history is the boss battle to become a Platinum Tamer in Digimon World Dawn/Dusk. You have in-training monsters and ImperialdramonPM against you. Sounds easy, but they all have ridiculously high stats and the first time I fought them I was basically wiped out in 3 minutes (2 of them trying to figure out my next move). Also, one of them uses a freaking lullaby attack that puts all of my active party to sleep, and I get pummeled therein. I think it took me a dozen tries, training my six strongest Digimon by leaps and bounds, and I still go down to one or two of my party still standing. And what's more bullshit is the Silver Tamer battle had three megas, with me thinking "Oh shit, these are powerful, there's no way I can beat them." then five minutes later "Oh shit, THESE are powerful?"
I'm just saying the Platinum Tamer battle was really more of a screw you [url=http://tvtropes.org/pmwiki/pmwiki.php/Main/BossInMookClothing[/url]boss in mook's clothing-ish battle. Except in a boss room.
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