'This Is Us' Season 4: Meet All the New Characters & Actors!

Blake Stadnik as Jack (Kate and Toby’s Son)

Blake Stadnik is a musical theater actor who is also an advocate for artists with disabilities. He plays Jack, the grown-up version of Kate (Chrissy Metz) and Toby’s (Chris Sullivan) son.

We see him in the future as a blind man who falls in love with a waitress at a diner. Eventually they get engaged and we find out they’re having a baby. Also, he’s a hugely successful singer!