Hiccup Horrendous Haddock III uses an insignia that is a combination of his and Toothless' faces. It includes Hiccup's Viking helmet and Toothless' teeth. It is seen on Toothless' tail and in his most recent appearance, Hiccup's right shoulder armor.
History[]
How to Train Your Dragon[]
In the first movie, the insignia is first seen on Toothless' new tail which was designed and given to him by Gobber. The tail is red and the insignia is white.
TV Series[]
The same insignia is kept on Toothless' tail through Dragons: Riders of Berk and Dragons: Defenders of Berk. By the time of Dragons: Race to the Edge, Toothless keeps the insignia on most of his tail fins where as Hiccup has the strike class symbol on his right shoulder armor or protector.
How to Train Your Dragon 2[]
Hiccup and Toothless now wear the same insignia. The final design is a combination of Hiccup's and Toothless' faces. The insignia can be seen on Toothless' tail and the right shoulder pad of Hiccup's new armor. The insignia final design also seems to resemble a Viking Helmet, similar to that which Hiccup wears during the first movie.