|Place of origin:||Mondas|
|Main voice actor:||Kathryn Guck|
Yvonne Hartley was a Mondasian who lived on Mondas. She lived with her dad and her brother and worked at the hydroponics centre, which contained the only living plants on Mondas. She suffered from a chronic cough. When Sisterman Constant came, she recommended that Yvonne be called up.