Board Thread:News and Announcements/@comment-37265568-20181028031802/@comment-24727325-20181028153043

I choose 5 of them:

Bruce Willis will be Lord Winterstone (a new villain for the film), Helen Mirren will be Phlegma the Fierce, Bobby Cannavale will be Firegust (another new villain for the film), John Lithgow will be Hanstro (Hiccup's descendant) and Cameron Boyce will be Young Hiccup.