Hamsuke

Hamsuke (ハムスケ, Hamusuke) is a minor character in Isekai Quartet and a character from Overlord. She's a giant Djungarian hamster who formally was known as the Wise King of the Forest until she met Ainz Ooal Gown and vowed her loyalty to him. In the world of Isekai Quartet, she now is the school's pet along with Death Knight, and later Filo.