Popsugar Entertainment This Is Us New and Returning Cast Members For This Is Us Season 4 All the New and Returning Cast Members For This Is Us Season 4 September 24, 2019 by Kelsie Gibson First Published: June 19, 2019 View On One Page Photo 17 of 28 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 17 Chris Sullivan as Toby Sullivan will return as Toby next season. Previous Next Start Slideshow This Is UsTV