Callison began acting on television in 2009, with a recurring role on Diary of a Single Mom.

He voiced King Tut in Mr. Peabody & Sherman,[3] Young Jiro in The Wind Rises,[4] and Billy Batson in the direct-to-video films Superman/Shazam!

The EP is a concept album about celebrity life and mental illness revolving around the protagonist's breakup with a mysterious woman named Juanita, as well as his thoughts of suicide and substance abuse.

[24] He was also nominated in the "Best Performance in a Feature Film – Supporting Young Actor" for his role in "Rock Jocks".

In 2012, he was nominated in the "Best Performance in a TV Series – Guest Starring Young Actor 11-13" for his role in Disney's I'm in the Band.