Masahiro Sakurai's Bizarre Approach to Final Bosses in World of Light! Ever since Super Smash Bros Brawl's Subspace Emissary, these adventure mode final bosses have been a great part of the SSB series. Now, in World of Light mode, the new final boss battles are given a design overhaul to be wonderfully weird. So today - let's tackle Tabuu and Smash Bros. Ultimate's Galeem and Dharkon true ending fight - on this episode of Boss Battle Breakdown!