Well, it actually could have been a number of movies or TV shows.
His performance earned him the Sundance Film Festival’s Special Jury Prize for Breakthrough Performance.
Speaking toNBC Newsabout the role, Seo revealed, “It was emotionally draining, mentally draining.”

Definitely the toughest role I’ve had to do because it’s so personal."
The same year, he scored the role of Kyler forCobra Kai and the rest is history.
I haven’t played a villain before, so it’s actually pretty refreshing."

He also admitted he had no idea how successful it would be.
“I did feel like it would be a hit but not this huge mega thing.”
(Via YouTube.)
We can’t wait to see what he does next!