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 Jon Huertas Miguel Rivas Guest Star Niles Fitch 17 Year Old Randall Guest Star Logan Shroyer 17 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 Bill Irwin ER Doctor Guest Star Lyric Ross Déjà Guest Star Amanda Leighton 17 Year Old Sophie Guest Star Iantha Richardson Adult Tess Guest Star Isabel Oliver Marcus Allison Guest Star Sherry Mandujano EMT Guest Star Jonny Berryman Jordan Guest Star Jinny Chung Assistant Guest Star Dan Fogelman Executive Producer Jess Rosenthal Executive Producer Charlie Gogolak Executive Producer John Requa Executive Producer Glenn Ficarra Executive Producer