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 Mackenzie Hancsicsak 10 Year Old Kate Guest Star Parker Bates 10 Year Old Kevin Guest Star Lonnie Chavis 10 Year Old Randall Guest Star Peter Onorati Stanley Pearson Guest Star Lyric Ross Déjà Guest Star Caitlin Thompson Madison Guest Star Joaquin Obradors 8 Year Old Jack Guest Star Donnie Masihi Nicky Guest Star Adam Johnson Park Ranger Guest Star Phillip Daniel Barista Guest Star Dan Fogelman Executive Producer Jess Rosenthal Executive Producer Charlie Gogolak Executive Producer John Requa Executive Producer Glenn Ficarra Executive Producer