Mann was born in Portland, Oregon and has lived in Dallas, Texas since he was 2 years old. He started playing ice hockey when he was 5 and played for his high school team. He has said, however, that skateboarding is his favorite hobby. Due to his prior acting experiences, Mann was told that he could not audition for Project X because the producers only wished to cast people with acting credits; Mann was ultimately given the role after auditioning seven times. He also played a role in It's Kind of a Funny Story as the role of Aaron. He will play a supporting role in the upcoming movie Fun Size which also stars Victoria Justice.
Mann is probably best known for his role in Project X and also for his role on the Nickelodeon show iCarly.
- iCarly (2009; TV series)
- It's Kind of a Funny Story (2010)
- Project X (2012)
- Fun Size (2012)
- Beautiful Creatures (2013)