Galesplitter

Galesplitter is a Windstriker that first appeared in Dragons: Rise of Berk.

Official Description
"Galesplitter was never actually trained, this special Dragon simply appears to prefer Viking society over nature."

Physical Appearance
Galesplitter is light blue with dark blue spots, jaw, tail and wing edge. I has yellow spines, claws, teeth and a stripe along the edge of the wings. Its underbelly is pale pink.

Trivia

 * Even though it is stated that Galesplitter wasn't trained, it is possible that the dragon grew near peaceful humans and because of that it doesn't consider them a threat.