Casey Cooke a young girl with a traumatic past and a history of self-harm, who is kidnapped by "Dennis", one of Kevin's personalities.
When Casey Cooke was 5 years old she when fishing with her dad and John Casey's uncle. Casey's father died as from a heart attack so she was taken cared by he uncle. Casey was at Claire Benoit's birthday party where Mr. Benoit said that he will take he and Marcia home. Casey, Claire and Marcia was taken by Dennis after he attacked Mr. Benoit. Casey and her friends were sacrifice for the Beast where she escaped Kevin.
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