Grimbus is a hippo from Hippo Story 4. He is, according to Plujij Kraduki, Snake's cousin. His name comes from Grimble, a Guardians of Ga'hoole character who, like Grimbus, is a guard, reads, and was killed by an ally.
Hippo Story 4Edit
In HS4 Plujij assigns Grimbus, Snake, and Sibonekt border patrol of the Hippo Empire. Sibonekt reveals that he is working with the Evil Shadows by giving Tarkanium a new sword, so Grimbus and Snake attack him. Grimbus is easily defeated by Sibonekt.