The 'Rocky' vet, who will play himself on the hit NBC series, can be seen filming for the Ron Howard-directed fake war movie with Justin Hartley's Kevin.
In one photo, the "Creed" actor poses for a selfie with series regular Justin Hartley (Kevin). Both actors can be seen filming for a fake war movie directed by Ron Howard, who also plays himself on the critically acclaimed series. "On the 'This Is Us' set with Justin Hartley, this is a fantastic show," he captions the snap, before gushing about Justin, "he is great to work with!"
He also posts a photo in which he takes a playful hit from Chrissy Metz, who plays Kate on "This Is Us". "Getting punched out by the amazing@chrissymetz On the set of 'THIS IS US' #thisisus," so Sylvester captions the photo.
His guest appearance on the series marks a reunion between "The Expendables" star and Milo Ventimiglia, who portrayed Sylvester's on-screen son in "Rocky Balboa". In another photo Sylvester posts, the pair stand next to each other while posing for the camera with a Harley Davidson motorbike in front of them. The 71-year-old actor writes, "My good buddy Milo Ventimiglia who was nice enough to invite me to be on the show #thisisus #harleydavidson."
Series creator Dan Fogelman previously revealed that Sylvester would play a "big part," especially to Kevin. Per Fogelman, Sylvester "hears what Kevin is experiencing in his life with his own father, and talks to Kevin a little bit about life and acting and memory and aging." Sylvester unfortunately is expected to appear in one episode only.
THIS One of the great mysteries in MY live!!! We can travel to the far ends of the UNIVERSE , yet , it's hard to find a decent local cell site!????! A MINI CELL PHONE HORROR movies starring Sylvester Stallone and Chrissy Metz ... and thank you Dan Fogelman you have created a great show.#thisisus @chrissymetz
"This Is Us" season 2 kicks off on Tuesday, September 26 at 9 P.M. on NBC.