Grandpa's Got a Brand New Bakugan

Marucho and Runo realize that the combined strength of the Battle Brawlers doesn't match up to Masquerade's power. Without Dan's knowledge, they visit Shun to try and convince him to join the team. Shun's Grandpa tries to send them away but Shun challenges them to a Brawl. If Marucho and Runo beat him, then he'll join. If not, he walks away....