Dean DeBlois, the director of both the animated and 2025 live-action versions of How to Train Your Dragon, explains why original cast member David Tennant wasn't offered to reprise his role in the new movie. The actor lent his voice to Spitelout, a tall, muscular Viking who is a warrior of the Hairy Hooligan Tribe, in the rest of the franchise. However, he didn't return for the live-action How to Train Your Dragon, which is now in theaters. Instead, the character is played by Peter Serafinowicz.