Karl is 30 years old. The actor was born on Jan. 3, 1988 in NYC, and is only 11 months older than Zoë. Even though he was born in the Big Apple, he was raised in Oregon.
He originally wanted to study business. He attended college in Portland, but after reading books by Stella Adler and Sanford Meisner, Karl dropped out of school and moved back to NYC to pursue his acting career. "When my parents divorced, I remember playing in the kitchen with my little sister and I had created an imaginary cooking show called Thor's Kitchen. My mother has always been really interested in Norse mythology, so I decided I was the god of lightning and I put on a cooking show and had a colander on my head, and it would make my mom laugh," he previously told The Last Magazine. "I think that was the start of it. I think it's always been to impress my mom, or to make her laugh or make her happy."