Zephyr Haddock

Zephyr Haddock is Hiccup and Astrid Haddock's daughter, who appears, along with her younger brother, at the end of How to Train Your Dragon: The Hidden World. Since she is their first born child, there is a chance, as well as a strong possibility, that Zephyr is the heir to the Hairy Hooligan Tribe of New Berk.

Appearance
Zephyr deeply resembles both of her parents, as she has her mother's blue eyes and her father's auburn-brown. As well as strongly looking like a younger version of Astrid, with brown hair.

Powers and Abilities
Zephyr possesses no special or magical abilities, making her a normal, everyday human girl.

Hiccup Horrendous Haddock III
Hiccup is Zephyr's father, while she is his first born child and possibly his heir. When Astrid gently pushed their children towards the Night Fury, Zephyr made a face that is similar to the one that Hiccup had made when he was cornered by Toothless before he spat half of the eaten fish into his lap; along with a few other faces that look a bit like the ones he made from when he was fifteen. When Hiccup introduced their children to Toothless, he first showed Zephyr how to bond with him before getting Nuffink to hold up his hand to the dragon. After flying with her mother for a bit, before Nuffink joined them on Stormfly's back, Hiccup helped Zephyr into Toothless' back so she could have a turn of flying on the Alpha dragon with her father.

Jack Frost
Being a child that saw her first dragon, during a time where they're existence had faded away from the world's memory of them, could mean that she'll be able to see and believe in Jack. As there is a Viking philosophy version of the winter spirit, Jokul Frosti.

Toothless
Toothless is the first dragon that Zephyr had met and she was scared of the Night Fury at first, due to the dragon approaching her father in a threatening and defective way until he recognized him.

Astrid Haddock
Astrid is Zephyr's mother. Zephyr was first seen by her side, as the Haddock family sailed to the Hidden World.