Terry is a co-owner and ride engieer at Thrill Ride Park. She was outwardly the more chipper of the two sisters, but inwardly she was full of anger and jealousy toward her sister. She is an excellent engineer, making her sister's ride concepts into reality. She felt like she did all the work for her sister Chris, while she took all the credit. She dressed up as the Roller Ghoster and framed her sister, so she could take over and build whatever she wanted. She got into very little trouble after she was caught; her sister Chris just said she would tell their mother.