'Rocky' star Sylvester Stallone is set to play himself in the hit NBC show 'This Is Us' as a mentor for Justin Hartley's character.
The 71-year-old action legend - who is married to Jennifer Flavin - will serve as a mentor to Justin Hartley's bachelor character Kevin in the hit show and will be helping him through feelings he has about his father Jack (Milo Ventimiglia) who died at the end of Season One.
Executive producer of the show, Dan Fogelman said: "Kevin is shooting a big movie and we needed his big co-star and Sly Stallone is coming to do a huge part on the show as Kevin's co-star and father figure in the film he's shooting."
Stallone is only set to appear in one episode but Dan has hinted his role could be stretch on throughout the season.
Dan said: "We have a great script for him. I think it's going to be really, really exciting."