Roll Casket is a central character in the Rockman (known as Mega Man Legends) series. She serves as a Spotter, guiding the protagonist MegaMan Volnutt during his adventures and providing technical expertise. Roll is intelligent, resourceful, and caring, often maintaining and upgrading MegaMan's equipment. Her supportive nature and close relationship with MegaMan are crucial to the story, making her an indispensable member of the team. She is also searching for her missing parents, which adds depth to her character.