Stream anime episodes for free, you want to Watch Bakugan Gundalian Invaders Episode 31 English Dubbed online for free. Episode guide Bakugan Gundalian Invaders Episode 31 English Dubbed True Evolution Dan and Barodius immediately battle with Drago easily tearing through Dharak’s Exokor. However, Dragonoid Colossus informs Dan that Drago and Dharak are too evenly matched and that Drago must win at all costs. Despite another evolution, it seems as though Drago barely matches up to Dharak in terms of power. Meanwhile, Nurzak suggests they split up again, himself with Fabia and Ren with Mason, in hopes of surprising Kazarina, having already lost the element of surprise earlier.