Kenny Wormald as Brandon McCormick: Straight A's student and he finds himself tied between a relationship with Ariel.

Dylan O'Brien as Alfie Mason: Vanessa's brother and the son of Dylan and Minka.

Julianne Hough as Ariel Hough: Dancer, songwriter and she's from New York. Who interest in the relationship with Brandon.

Holland Roden as Lydia Alman: A shy girl from being involved the enemies and takes a stand with Alfie.

Sophia Bush as Beth Pierce: The member of cheerleader River Vixens with Cheryl Blossom as she joins Archie and his friends.

Tom Holland as Sean McCall: Jughead's childhood, A Riverdale High quarterback and powerful strength.

Blake Jenner as Justin Adams: Laura's high school crush, who uncovers with the illegal activities.

(You) as Romeo Lyons: Zurich's brother, a young street man who running up to the members of New Kid on the Block and being attitude for the entire town.

P.S. There is no picture for the character

And more recurring casts.