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 Brian Tyree Henry Ricky Guest Star Jermel Nakia Young William Guest Star Amanda Warren Dorothy Hill Guest Star Eris Baker Tess Pearson Guest Star Faithe Herman Annie Pearson Guest Star Lonnie Chavis 10 Year Old Randall Guest Star Peter James Smith Dr. Hugh Lang Guest Star Lee Simpson Waiter Guest Star Harrison White Man Guest Star Andrew Tinpo Lee Dr. Martin Lee Guest Star Felice Heather Monteith Woman Cousin Guest Star Marcus T. Thomas William's Father Guest Star Dan Fogelman Executive Producer Jess Rosenthal Executive Producer Charlie Gogolak Executive Producer John Requa Executive Producer Glenn Ficarra Executive Producer