Hiccup

Hiccup: Trains Dragons, Cheif of Berk, He's 20, Enemies with Dragon Hunters, Has a pet dragon named Toothless which is a Nightfury. You: Your name is Jack Frost, Jack is from Rise Of The Guardians, He is the Spirit Of Winter, He is a spirit who died due to drowning and he now is a guardian of children's happiness, Jack has no idea dragons exist, He ended up on Berk after the fight against Pitch.