Angelo Preyas and Diablo Preyas are the second Guardian Bakugan of Marucho Marukura. They are two-in-one Bakugan, with one half being Preyas Diablo, and the other half being Preyas Angelo.
Preyas Angelo politely refers to Marucho as "Young Master". According to Angelo, he tires very quickly and requires constant breaks. He "gets every second Monday off" but "doesn't do windows". Angelo supposedly has mixed Attributes, part Aquos part Haos. Diablo, on the other hand, is a tough smack-talking devil version with a hot temper to match. He has opposite Attributes being Aquos and Pyrus. Each switch places, regularly taking turns. While one side is active the other lies dormant and unaware of its surroundings.
Although they were not featured in Season 2, they appeared in a photo that Mira refers to in Duel in the Dunes.
In Blast From the Past, Diablo appears along with several past Bakugan to prevent Mechtavius Destroyer from destroying New Vestroia. Overpowered, the Bakugan are unsuccessful and Diablo is one of the first to perish.
Because the Brawlers used the Current of Time to go back before Mechtavius Destroyer killed him, he is now most likely living peacefully on New Vestroia.
Angelo Preyas is voiced by Eric Idle in the English dub and his Japanese is unknown.
Diablo Preyas is voiced by Penn Jillette in the English dub and Jouji Nakata in the Japanese dub.