|— Hiccup shows his Dragon Eye|
The Dragon Eye II was a modernized model of the original that Hiccup created after the original one fell into the volcano. It was first hinted at in "A Matter of Perspective" and was first shown in "The Wings of War, Part 2".
|— Hiccup reveals his almost-complete Dragon Eye|
In "Dawn of Destruction", Fishlegs is tempted to look under a tarp in Hiccup's hut at what he had been working on but decides against it. When the Dragon Hunters compromise Dragon's Edge, Hiccup has Toothless destroy their hut before the Hunters see what he had been working on inside. Thankfully, Fishlegs had retrieved the pieces before the hut was burned, and returned them to him so he could finish it, despite not knowing yet what exactly it was.
The Eye is revealed almost finished in "The Wings of War, Part 2" after it's found that both Viggo and the original Dragon Eye survived the volcano.
|“||As for the Dragon Eyes, they are such amazing tools for dragon knowledge, but in the wrong hands, they are just too dangerous. [src]||”|
|— Hiccup before destroying the Dragon Eyes|
In "King of Dragons, Part 1", after obtaining the fifth lenses, Toothless lit up the Dragon Eye II, revealing clues that led the Dragon Riders to the Titan Wing Dramillion on Dramillion Island. After the Titan Wing Dramillion was captured by the Dragon Flyers and released shortly thereafter, the Dragon Riders took it to Caldera Cay for treatment. While under the care of the Defenders of the Wing, the Titan Wing Dramillion produced a never-seen-before flame. Hiccup lit up the Dragon Eye with that flame, causing the map to change and revealing the location of the King of Dragons to be underneath Berserker Island.
During the aftermath of defeating the Dragon Flyers and saving the King of Dragons’ egg in "King of Dragons, Part 2", the Riders decide to destroy both the original Dragon Eye and the Dragon Eye II after realizing how dangerous they could be in the wrong hands.
|“||Come on, now, T, fire that magical plasma up and let a beacon of knowledge shine down upon us and light our merry way. [src]||”|
|— Tuffnut to Toothless|
To use dragon fire to illuminate various lenses, projecting an image with extensive info and knowledge on any flat surface on thousands of different dragon species.
The specific gems used as filters for the Dragon Eye II are a ruby, a sunstone, a topaz, an emerald, a turquoise, sapphire and an amethyst. They were each identical in size and cut. The real-life counterpart of this cut is called an Asscher cut.
Similar to the original Eye, Hiccup's is made of many metal gears and glass, with the shape of a Night Fury head at the projecting end. Though, unlike the original, Hiccup's is black and red; his and Toothless' trademark colors. It also appears to have a little more girth than the original.
|Race to the Edge, Season 5|
|1. "Living on the Edge":||Absent||8. "The Wings of War, Part 1":||Absent|
|2. "Sandbusted":||Absent||9. "The Wings of War, Part 2":||Appears|
|3. "Something Rotten on Berserker Island":||Absent||10. "No Dragon Left Behind":||Absent|
|4. "Snotlout's Angels":||Absent||11. "Snuffnut:||Appears|
|5. "A Matter of Perspective":||Absent||12. "Searching for Oswald... and Chicken":||Absent|
|6. "Return of Thor Bonecrusher":||Absent||13. "Sins of the Past":||Absent|
|7. "Dawn of Destruction":||Mentioned|
|Race to the Edge, Season 6|
|1. "In Plain Sight":||Appears||8. "Triple Cross":||Absent|
|2. "No Bark, All Bite":||Absent||9. "Family Matters":||Absent|
|3. "Chain of Command":||Absent||10. "Darkest Night":||Absent|
|4. "Loyal Order of Ingerman":||Absent||11. "Guardians of Vanaheim":||Absent|
|5. "A Gruff Separation":||Absent||12. "King of Dragons, Part 1":||Appears|
|6. "Mi Amore Wing":||Absent||13. "King of Dragons, Part 2":||Appears|
|7. "Ruff Transition":||Absent|
|Dragon Eye II is also available in other languages. |
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