Mandy Moore Rebecca Pearson Actor Milo Ventimiglia Jack Pearson Actor Sterling K. Brown Randall Pearson Actor Chrissy Metz Kate Pearson Actor Justin Hartley Kevin Pearson Actor Chris Sullivan Toby Damon Actor Susan Kelechi Watson Beth Pearson Actor Ron Cephas Jones William Actor Eris Baker Tess Pearson Actor Alexandra Breckenridge Sophie Actor Faithe Herman Annie Pearson Actor Hannah Zeile Teenage Kate Pearson Actor Niles Fitch 15 Year Old Randall Guest Star Logan Shroyer 15 Year Old Kevin Guest Star Mackenzie Hancsicsak 10 Year Old Kate Guest Star Parker Bates 10 Year Old Kevin Guest Star Lonnie Chavis 10 Year Old Randall Guest Star Arianna Ortiz Dr. Sara Arroyo Guest Star Lyric Ross Déjà Guest Star Elizabeth Perkins Janet Malone Guest Star Brian Grazer Himself Guest Star Eliza Shin Dr. Lu Guest Star Tom Virtue Dr. Grader Guest Star Sasha Matthews Maya Guest Star Jason Sims-Prewitt Duncan Guest Star Nick Smoke Brady Guest Star Shawn Patrick Clifford Bowling Alley Employee Guest Star Dan Fogelman Executive Producer Jess Rosenthal Executive Producer Charlie Gogolak Executive Producer John Requa Executive Producer Glenn Ficarra Executive Producer