Frosch is the legendary Bakugan who brings sage wisdom into play. He is the wisest and the most tactical of The Six Legendary Bakugan. He is a gigantic frog-like creature with huge legs for fast maneuverability and a long whipping tongue. In battle, Frosch produces a water tornado to overcome its enemies.
He is a giant frog-like Bakugan and one of the Legendary Soldiers of Vestroia. He was originally disguised as a frog man who needed water and had Marucho get it for him. He then revealed himself to be Frosch and conjured up an Illusionary Marucho to use. This version of Marucho was the version that did everything his parents told him to do. This made Marucho realize that he needed to accept how his past allowed him to become who he is today and Marucho gained Angelo/Diablo Preyas. Frosch was defeated by Preyas when he was on the Triple Battle card and teamed up with Diablo.