I personally have a love hate relationship with all bosses in fighting games though I tend to prefer the characters that are created to be the boss instead of just super powered versions of playable characters. My favorite final boss is from MELTY BLOOD aacc when you beat arcade mode with Riesbyfe. My least favorite boss is probably Inferno from Soul Calibur 2. He just feels cobbled together and lazy with no personality. I mean sure, he looks cool but whatever. I just wish he could have been unlocked as a third Charade color.