He began his acting career in commercials for Samsung Galaxy and the sports video game NBA 2K15.

[6] He made his second film appearance in the comedy-drama 20th Century Women in 2016, starring Annette Bening, Elle Fanning and Greta Gerwig.

[8] Walters made his breakthrough as Jason Todd, the second Robin, in the fifth episode of Titans and had a recurring role in the series throughout the rest of the first season.

[10] He later appeared as the character in the CW's Arrowverse crossover event "Crisis on Infinite Earths", alongside Alan Ritchson's Hawk, via archive footage from the first season of Titans.

[12][13] He reprised his role for one episode of the fourth and final season of Titans, though he was still billed as a main cast member.