Tessa Thompson Lady (voice) Justin Theroux Tramp (voice) Kiersey Clemons Darling Thomas Mann Jim Dear Ashley Jensen Jock (voice) Benedict Wong Bull (voice) Janelle Monáe Peg (voice) Yvette Nicole Brown Aunt Sarah Arturo Castro Joe Adrian Martinez Elliott Sam Elliott Trusty (voice) Ken Jeong Doctor Clancy Brown Isaac (voice) Parvesh Cheena Pet Shop Owner F. Murray Abraham Tony Curtis Lyons Foreman Kate Kneeland Jock’s Owner Darryl W. Handy Trusty’s Owner James Bentley Chance (voice)