Dier's roles include Caden in Every Second Counts, Hutch in Mr. Young and Luke Matheson on Freeform series Ravenswood.
- Brett was born to act. He enjoys making people laugh while using his great improvisation skills. Many of his goals he has been able to achieve.
- He has his first Dan Black Belt in Tae Kwon Do, has reached the 6th grade in Conservatory Music (in piano) as well as the Suzuki Method. (He has been playing since the age of 4).
- He is been in the Jazz Band in High School and obtained honors.
- He is an accomplished swimmer getting his Medallion Medal toward a lifeguard certificate.
- He also enjoys playing the guitar in a band and is self taught.
- Dier practices breakdance and parkour.