Jeff Deliverer of Mail
Money for nothin, chicks for free
I would think Ganon from Twilight Princess would have been a guaranteed answer. I'm not the biggest TP Zelda fan considering how much I hated wolf form and the childish nature of the sidekick but .....ooooof that final boss! He changes into all the bosses you've fought throughout the game, a sword wielding badass and a gigantic bull. It took me forever to beat him and I'd probably call it one of my favorite and exhausting boss fights ever. For the life of me I couldn't figure out the bull until I barely caught a glimpse of the A button on the screen before he'd run me over, then Ahhhh.