Jennifer "Jenny" Majorheely (Gilland Jones) is a 16-year-old girl. She once dated T.J. Taylor, but he turned her into an middle-aged woman (Heidi Swedberg). Alex turned her back into a teenager and made her promise not to tell anyone. She knows Alex's secret and has a weird squeal, which annoyed Harper. She is in the Happy Helpers Club. The characters last name is a pun on the I Dream of Jeannie character Major (Roger) Healey.