Outcast Island

Outcast Island was a wild dragon nesting ground and home of the Outcast Tribe. It is the only place where a Loki Tree can be found. It has no discernible farms.

Riders of Berk
When their leader Alvin the Treacherous found out that dragons could be trained, he had his tribe capture as many dragons as they could hold in hope of using dragons for his own evil purposes. Hiccup, Toothless, and Snotlout got stranded on the island in  and got home before the Outcasts find them   Following the kidnapping of Hiccup, Alvin learns how to control dragons from the new dragon trainer of the Outcasts Mildew, and earns the trust of a Whispering Death, bringing a new era to the Outcast Tribe.

Defenders of Berk
Following the apparent "death" of Alvin, Dagur and his Berserker Tribe took control of the Outcasts and the Island. Dagur then arranged a trap for Hiccup, which failed. Dagur then had tests done with dragons, observing their reactions to Dragon Root. He then held Stoick, later Hiccup and Toothless hostage at the Outcast Arena. However, Alvin and Mildew then freed the Whispering death and ended Dagur's control of Outcast Island.

Race to the Edge
For 3 years, Dagur, his loyal Berserkers and Outcast soldiers were held here for their crimes. However, a traitor among the Outcasts gave Dagur a key, and he was able to escape.

Inhabitants

 * Alvin the Treacherous
 * Savage (formerly)
 * Mildew
 * Outcast Tribe
 * Fungus

Dragon Species

 * Groundsplitter

Many wild dragons

 * Gronkles
 * Deadly Nadders
 * Monstrous Nightmares
 * Whispering Death
 * Screaming Death
 * Scauldrons