Sam Rockwell Ivan (voice) Bryan Cranston Mack Phillipa Soo Thelma (voice) Chaka Khan Henrietta (voice) Mike White Frankie (voice) / Passing Driver Ron Funches Murphy (voice) Angelina Jolie Stella (voice) Helen Mirren Snickers (voice) Danny DeVito Bob (voice) Brooklynn Prince Ruby (voice) Ramón Rodríguez George Ariana Greenblatt Julia Owain Arthur Castello Kevin Mathurin Mike Betsy Graver Mother In Park Eleanor Matsuura Candace Taylor Indira Varma Dr. Maya Wilson Haley Flanagan Jennifer Davina Sitaram Passerby