[2] He has also appeared in several films, including Sky High (2005), Princess Protection Program (2009), Red State (2011), Prom (2011), The Perks of Being a Wallflower (2012), The Watch (2012), Date and Switch (2014), How to Be Single (2016), Zola (2021), and Cat Person (2023).

His father, Craig Braun, is an actor and a former graphic designer, who co-designed the Rolling Stones' tongue and lips logo.

[8][9] He played the regular role of Cameron on the ABC Family show 10 Things I Hate About You,[9][10] until it was cancelled with its final episode airing on May 24, 2010.

In 2011, he played Lloyd Taylor in Disney's theatrical release Prom,[9][12] and Billy Ray in Kevin Smith's Red State.

For his performance in the show, Braun received critical acclaim and was nominated three times—in 2020, 2022, and 2023—for a Primetime Emmy Award for Outstanding Supporting Actor in a Drama Series.

[20] He stated that the song was made in partnership with Partners In Health and the COPE Program to encourage listeners to donate in support of those most at risk from the pandemic.

[24][25] He was cast as both filmmaker Jim Henson and entertainer Andy Kaufman for the 2024 biographical dramedy Saturday Night and will appear in the 2026 thriller Three Bags Full: A Sheep Detective Movie, based on the novel by the same name.