Purple Death (Franchise)

The Seadragonus Giganticus Maximus is a giant sea-dragon that first appeared in the Dreamworks franchise in the comic The Legend of Ragnarok.

Description
This dragon is massive in size, close to dragons like the Screaming Death. It's so big that it has been known to cause seaquakes. This led vikings to believe this was the Serpent of Midgard from legend, heralded to bring Ragnarok, i.e. the end of the world.

Its most notable feature is, perhaps, the long tendrils that extend from under its jaw, somewhat resembling a beard. This feature is similar to that of other sea dragons, like the Sliquifier and Shockjaw. It's body is a deep purple in color.

The mere pressence of this dragon is enough to greatly disturb other nearby dragons.

Trivia

 * This dragon required the combined force of Berk and the outcasts, plus the hypnotic gaze of a changewing to defeat.