Tabuu

Taboo (also known as Tabuu) is the final boss in the Subspace Emissary mode of Super Smash Bros. Brawl. He resembles the characters from the movie Tron and he will have two forms, the second one including an enormous ethereal wings. He seeks ultimate power by bringing worlds into Subspace, using the guise of Master Hand as a means to enlist the help of Ganondorf and other villains. When Ganondorf meets him, he quickly dispatches of him and turns him into a trophy. He also takes down most of the heroes led by Mario in another fell swoop, though not getting the small group of Ness, Luigi, Kirby and King Dedede who begin freeing characters. Taboo also faces a challenging opponent in the form of Sonic the Hedgehog, who arrives just in time for the final battle.