This sickened him but he was able to accept his past and how it made him who he is today and passes the test. When Marucho was being tested by Frosch he had to fight an old version of himself, the one who always listened to his parents. Unlike other Bakugan, Preyas multiplies when he evolves, so Marucho got to keep the old Preyas and the new one. Preyas evolved into a two-sided Bakugan called Angelo and Diablo by coughing them up. Later, when Klaus shows up with Preyas, Dan Kuso and Runo Misaki use the ability Pure Light to win Preyas back. Preyas was sent to the Doom Dimension in Marucho's battle with Klaus von Hertzon, which made Marucho want Preyas back so much that when Klaus opened up his portal, Marucho followed him. His Guardian Bakugan is Aquos Preyas, who crashed Marucho's house party, which was thrown after he moved into Dan Kuso's town. In the Japanese version, Marucho speaks in a polite and formal keigo accent, thus putting honorifics in his speech and uses honorific suffixes when addressing a character's name, such as Dan-san and Drago-san.

Marucho has a butler named Kato, though Kato is not usually around Marucho anymore, due to the fact that Kato is now working for Marucho's father. He now has no regrets for the past, realizing that he only wanted to make his parents happy. He used to be extremely obedient to his parents out of fear, but that changed when he joined the Brawlers however he is still very obedient. He loves to play Bakugan and to work on strategies. He is the Brain of the Brawlers, a real walking encyclopedia. He is a wealthy, generous boy who specializes in Aquos.

2.2 Bakugan Battle Brawlers: New Vestroia.

Shun bakugan battle brawlers