Hardest Boss Battles #5 HD - Tabuu
Tabuu from Super Smash Bros. Brawl is no joke. The boss rush mode is usually what people associate as the hard Tabuu, but the Tabuu in story mode actually does way more damage and most attacks can kill in on shot.
I also ain't got time to do another insane boss rush, I gotta quota to meet ya hear!
Just use R.O.B. plus Up-Air it's OP on Tabuu.