Viggo's Flightmare

Viggo's Flightmare is a Flightmare that appeared in Race to the Edge, in the episodes Maces and Talons, Part 1 and Maces and Talons, Part 2.

History
This Flightmare lived somewhere near Dragon's Edge, possibly on Algae Island. Heather tracked it for months, before she pretended to join Dragon Hunters. When Viggo wanted to capture it, Heather gave him the information and later made an ambush plan with Hiccup.

Hiccup had a plan to lure the Flightmare onto the Reaper by throwing the glowing algae on it, and it worked at first, but soon the Hunters captured it and muzzled it.

Viggo used the Flightmare later to freeze Hiccup, unlock the Dragon Eye and as a distraction for his escape. Later the Flightmare was released and it flew to an unknown place.

Personality
This Flightmare appears to be more aggressive, territorial and intelligent, as it attacked the Hunters, regardless of the consequences, and it sprayed Ruff and Tuff with algae to look at them as food. Also, it chased them around the island while shooting mist, not waiting for a direct hit.

Abilities
Glow: Like all Flightmares, this dragon glows when it eats certain glowing algae.

Shooting Mist while Flying: Like all Flightmares, this dragon can shoot mist. However, unlike the Hofferson's Bane, this Flightmare chased Ruff and Tuff around while its mouth was open, leaving a trail of mist in the air.

Relationships
Hiccup: Although it didn't spend much time around him, it was shown that it is very aggressive towards him and tried to attack him multiple times.

Viggo Grimborn: After Ryker put the bucket with algae in front of the cage, Viggo pushed it inside, allowing the Flightmare to eat. He said that it must be treated with respect, although he obviously didn't mean that, especially when he muzzled it and used it's mist to unlock the Dragon Eye. Flightmare also wasn't friendly, as it roared at him after he gave it the bucket, and it narrowed its eyes towards him.

Trivia

 * It is possible that this Flightmare is actually the Hofferson's Bane, as it was never revealed where it went after Fright of Passage.
 * This Flightmare doesn't have pupils in its eyes, unlike the Hofferson's Bane, who does have pupils.