Grimmy Liz always caused a lot of problems. She is very curious and brave mare but sometimes very silly. Once accidentally set fire to the house. Another time endangered the life of her only friend. When she went to school, her friends teased her very much and once even beat her. She was living alone in Ponyville since she was just a child. Even her parents left her. She was a laughingstock because of that. She hated everyone in the world and wanted to punish them all.

As she often likes to say : "One day, they will regret!"