- "This headstrong dragon won't stop until it gets what it wants. Luckily, most of the time, it just wants to say hello."
- ―Dragons: Rise of Berk
Gustnudger has the appearance of a normal Windgnasher. He is green in color with black spikes and brown bumps on his body. He has several, little brown spots on his wings and frill.
Gustnudger was seen in the background of a scene in which he tries to say hello to Toothless by rubbing up against him, to which the latter was a little annoyed. He is then seen in a group of other dragons who are investigating Toothless, before Toothless scares him and the rest off after being sniffed by Pestbud. Afterward he is observed being controlled by Drago's Bewilderbeast but is later freed from his control by Toothless. He then bows down to Toothless as the new Alpha. He is last seen standing on a pole, spectating the new Dragon Races.
Described as 'headstrong', Gustnudger is a stubborn and determined dragon who stops at nothing to achieve his goal. However, his aim is usually to say hello to fellow dragons. This friendly dragon was seen greeting Toothless and Hiccup with enthusiasm in the second film though the former seemed a little annoyed. But he is overall a friendly and likeable dragon to the duo.