u go to the great maze bottom let and find your way there
Chat with our AI personalities
tabu, beau, frau
'Tabu', also spelled 'taboo' works here...
Complete 400 matches in Brawl (not online), or play through the subspace emissary. ------------------------------------------- pass The Subspace Emissary all of the missions,includng tabu,then go to THE FOREST, the first door you see go inside and there he will be!There you will have to fight him to win him! GOOD LUCK!
If you mean playing as Tabuu you cant so you cant unlock strictly speaking.
go though all shadow doors then do to the door that leads to tabu