Cathy Ang Fei Fei (voice) Phillipa Soo Chang'e (voice) Ken Jeong Gobi (voice) John Cho Father (voice) Sandra Oh Mrs. Zhong (voice) Ruthie Ann Miles Mother (voice) Margaret Cho Auntie Ling / Gretch (voice) Kimiko Glenn Auntie Mei / Lulu (voice) Artt Butler Uncle / Bill (voice) Irene Tsu Grandma (voice) Clem Cheung Grandpa (voice) Conrad Ricamora Houyi (voice) Brittany Ishibashi Blue Lunette (voice) Janice Kawaye Pink Lunette (voice) Glen Keane Space Dog / Rail Worker #3 (voice) James Taku Leung Photographed Father / Rail Worker #1 / Delivery Man (voice) Elizabeth Pan Photographed Mother (voice) Josiah D. Lee Photographed Son (voice) David Chen Townsperson / Teacher (voice) Meilee Condron Additional Voices (voice) Ewan Chung Additional Voices (voice) John Kahrs Additional Voices (voice) Esther Chae Lunarians (uncredited)