As Hiccup, the 17-year-old actor is shouldering the weight of Universal’s new live-action franchise — and living out his childhood fantasy.

The revelation comes as Thames and costar Nico Parker, who plays fierce Viking warrior and Hiccup's crush Astrid, put their acting chops to the test in a game — Entertainment We

The actor, who will celebrate his 18th birthday next month, also explains why he did not try to match original actor Jay Baruchel's voice: "if I did an impersonation like that for this film, it would feel rude.