Grimbus Perx

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 4
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.