Frey

Frey is a boy that appears in the comic "Snowmageddon".

Meeting the Dragon Riders
Chilblain sends iron ore to Berk and other locations very punctually, however, Gobber notices of late, they have not received any at all. Concerned, some of the Hairy Hooligan Tribe and the Dragon Riders sail to chilly Chilblain to find out about the lack of deliveries. They find that the village is in chaos from the arrival of Dragons and the eruption of Mount Ymir.

While the adults meet and discuss their predicament, the Dragon Riders meet with three Chilblain kids named Kettil, Frey, and Gunilla. Unlike the adults, the children are interested in Dragons and Dragon riding. They teach Hiccup and the other Riders about a game they play called "Snowmageddon", which involves a snowball fight while "surfing" on sleds across the snow.

Training a Dragon
Unlike Kettil, Frey is not seen taking a crash-course in dragon-training. He appears later in the Comic riding what appears to be a Typhoomerang, helping move his people to safety. It is unknown at what point in the crisis he was able to train a dragon.

Physical Appearance
Kettil is a lean boy that appears to be about the same age as Hiccup in the Dragons: Defenders of Berk series. He has brown scraggly hair that hangs roughly to his chin. In the Comic he wears a red tunic with a brown sleeveless vest. He also has a unique helmet - it has two horns, one pointing up and the other pointing down.

However, his clothing color does not remain consistent throughout the comic - in later panels his clothing becomes mostly shades of green. His helmet, however, remains fairly consistent.

Trivia

 * The name "Frey" is most likely derived from the Norse God, Freyr.