Why You Should Know Who Nat Wolff Is — and Where You've Seen Him Before

In this year's smash hit drama, Wolff may not have been either of the leads, but he still stole scenes from Ansel Elgort and Shailene Woodley. Wolff played Isaac, the best friend to Gus and then Hazel, and not only would you remember him because he wore dark glasses the whole time — a result of losing his eyes to cancer — he also had some great lines and scenes (remember when he got dumped?).