Shipsbane

Shipsbane is a Submaripper who first appeared in Dragons: Race to the Edge and later appeared in Dragons: Rise of Berk.

Official Description
"This less-than-gentle giant revealed a soft spot after being freed by Hiccup. The biggest of Dragons can often be allies, even if just for a moment."

- Dragons: Rise of Berk

Physical Appearance
Shipsbane looks very similar to a normal Submaripper. He is very large in size and has several sharp teeth in his mouth. He is light green in color with several dark green splotches and stripes all over his body, legs, and tail. He has several, plant-like growths on his back and tail.

Biography
At some point before Race to the Edge, Viggo Grimborn and his Dragon Hunters captured Shipsbane. Viggo kept the dragon to use at a later date.

In Dire Straits, Viggo, tired of constantly being defeated by Hiccup and his Dragon Riders, decided to use Shipsbane to his advantage. He chained the dragon to the seafloor of the Straits of Baldur with dragon-proof chains in an attempt to cut off all of Berk's trade and starve the people, forcing Hiccup to chose between the safety of the village and defeating Viggo. Shipsbane used his whirlpool to attack a group of traders coming to Berk, killing all of them except for Trader Johann, who was able to avoid the whirlpool due to prior experience with Submarippers. Johann told Hiccup and Stoick about the event, enraging Hiccup. He and the Dragon Riders headed to the Straits of Baldur, where they found the Submaripper attempting to suck an adolescent Scauldron into its whirlpool. The riders saved the Scauldron and dove underwater on their dragons to see the cause of the problem. When they encountered Shipsbane, they noticed that he was chained to the seafloor and tried to free him, but the dragon kept attacking them. Unable to stay down underwater long enough to break the chains, Hiccup created the Diving Bell and used it to reach the sea floor. He used Changewing acid to break the chains, as it could burn through dragon-proof metals. Unfortunately, the Dragon Hunters soon arrived, using the vibrations of the rocks their catapults threw hitting the water to wake up the Submaripper. Shipsbane tried to attack Hiccup, as he believed he was trying to hurt him. Fortunately, however, Hiccup was able to free the dragon from the chains, but the Diving Bell was broken with Hiccup trapped inside it. With Toothless unable to save him, Shipsbane, in gratitude for Hiccup saving him from the chains, picked up the Diving Bell in his jaws and carried it to the surface, where he deposited it on the Rider's boat. He then surfaced and roared his thanks before diving back underwater and swimming away.

Shipsbane returned in Shell Shocked, Part 2, where he was summoned when Viggo, who was "working" with Hiccup and the Riders in an attempt to stop Ryker Grimborn and the Shellfire, dropped a dagger into the water, creating vibrations that attracted the dragon. He briefly fought the Shellfire, with the fight ending with Shipsbane knocking the metal Dragon Hunter ship off of his opponent's back. As the Shellfire swam away, Shipsbane created a whirlpool and sucked Ryker in, possibly killing him. Shipsbane than swam away deep into the ocean as well.