Big Buff

Astrid's Savior is a Buffalord that first appeared in the Race to the Edge episode Buffalord Soldier.

Buffalord Soldier
When Astrid comes down with the lethal Scourge of Odin in Buffalord Soldier, the gang rushes to find the said-to-be extinct Buffalord in hopes of finding a cure. When they finally spot one at the far end of the Barbaric Archipelago, they attempt to lead it back to the Edge, only to have the dragon release exploding flames in protest. As such, they collect its healing saliva, only to find that it dries up very quickly. The riders bring Astrid over to the island, but Viggo has other plans to seize the Buffalord to the black market. After a major dilemma, Hiccup promises to let Viggo take the Buffalord away, if only he gets the cure. Reluctantly, both parties agree and Astrid is cured. The Buffalord is led away, still passive and gentle. The gang is upset with Hiccup's seemingly unnecessary sacrifice, while Ryker is somewhat surprised that they did not put up a fight. Viggo remarks that Hiccup is one who keeps his word, only to whip around and see that the Buffalord had broken out of its cage and made its way back. The Buffalord lands back on the exact same spot, next to a smirking Hiccup, to resume eating.

Appearance
Astrid's Savior is ochre on the back and light brown on the belly. His head is similar to a tortoise's, with horns growing to the side and forward, like a yak, and a single horn resembling that of a unicorn or a rhinoceros growing atop the skull. He has very large wings, and four small legs that are positioned close to the middle of its body. It also boasts a row of spines along its back, with smaller one scattered on its bronze back too. As an herbivorous dragon, Astrid's Savior is quite rotund.

Personality
Astrid's Savior, like all Buffalords, is mostly very gentle, docile, and lazy. When Astrid's Savior realizes he's being transported off his island, he is very aggressive and can be quite terrifying.

Trivia

 * Astrid's Savior is the only Buffalord known to exist and may be the last of its species.
 * Being the only Buffalord known, it is unknown if this is the normal coloration for this species or it is a individual one.