<Li> Colin Lawrence as Coach Floyd Clayton: Chuck's father, and coach of Riverdale Bulldogs Football Team . </Li> <Li> Peter James Bryant as Mr. Waldo Weatherbee: Riverdale High School's principal . </Li> <Li> Sarah Habel as Miss Geraldine Grundy: Riverdale High School's young music teacher, who had a sexual relationship with Archie over the summer . It is revealed in the fourth episode of Riverdale that Grundy moved to Riverdale after changing her name from Jennifer Gibson after her divorce, to escape from an abusive relationship . Since then Grundy has moved from Riverdale to avoid police capture because of her relationship with Archie . </Li> <Li> Ross Butler (season 1) and Charles Melton (season 2) as Reginald "Reggie" Mantle: Archie's long - time friend and rival, a football player at Riverdale High and town prankster . Butler left the series after season 1 owing to his commitments as a series regular on 13 Reasons Why; Melton has been cast to take over the role of Reggie in season 2 . </Li>

When will there be new episodes of riverdale on netflix