Rocma is a humanoid polar bear from the snowy Iceberg Isle. She is Mafuyu's foster parent and has a deep dislike for Idate. Rocma often comes off as cold and rough; angering her will reveal her more ferocious and terrifying side. She often She is rather stubborn and is harsh to the majority of the people she interacts with. She is also very strong as well, almost equal to Idate in battle. She cannot feel love romantically. Rocma can also cook simple home-cooked meals. She enjoys tangerines.