Leonardo "Leo" Wong (voiced by Billy West in Seasons 1-7, Feodor Chin in Season 8) and Inez Wong (voiced by Lauren Tom) are the very wealthy parents of Amy Wong. They are human Martians of Chinese descent who own the entire western hemisphere of Mars and a buggalo ranch. They often pester Amy about their lack of grandchildren and meddle in her love life, trying to find a man to father their grandchild. When Amy and Kif Kroker begin dating, they decide Kif is not man enough for her. They do seem happy when he and Amy have children. Leo is one of the primary villains in Into the Wild Green Yonder, and they disrespect the indigenous Martians.