Quantum Refractor

Quantum Refractors, commonly called just Refractors, known as Deflector (ディフレクター) in Japan, are the main energy source in the Mega Man Legends series. Quantum Refractors are large crystals capable of generating efficient amounts of energy when spun at high speeds, but are found deep underground in ruins guarded by Reaverbots and traps. Refractor shards can be found inside Reaverbots. It is a Digger's goal to find Quantum Refractors or treasure in the ruins. The current technology used in the world of Mega Man Legends, known as Holon Technology, are powered by Quantum Refractors, such as the Flutter and the Gesellschaft.

Smaller Refractors, known as Refractor shards (resembling actual shards in Legends 1 while looking like small refractors in Legends 2) are, instead of being used as a power source, are converted into Zenny, the world's currency. Reaverbots often drop these upon defeat. The highest class of Refractor Shards are Blue, common in the first game, while in the second, blue Refractor Shards are incredibly rare, only dropped by one enemy, while dark violet is more common. Shards vary in both size and color depending on their worth.

Creation
While the origins of Quantum Refractors were not made clear in the first and second installments of the Legends series, it is revealed in Rockman DASH: Great Five Island Adventure! that Refractors are processed from magma using a specialized device, because of the extremely high amounts of energy it contains.

Also, there is proof that such technology was used in chronologically previous installments of Mega Man.

In Mega Man Zero 3, the battle of Cubit Foxtar took place in a factory's main power plant, which held a crystal similar to the Quantum Refractors of Legends. This, and countless other references reveals a connection between all of the series of Mega Man.

Large Refractors
Large Refractors are often found at the very end of Sub Ruins, guarded by boss class Reaverbots, and if not, usually trigger an alarm system or trap upon being taken. Color is an apparent standing on the rarity and power of the Refractor. B Class large refractors are often blue, A class are Yellow, while S Class (able to power the Flutter) are Red.

"Rainbow Refractor"
An enormous, multicolored refractor is seen near the end of the first Mega Man Legends, powering the Main Gate. It is taken as spoils by the Bonne family which they sold for a large sum of money, but Teisel wasted all the money. A book in the Kattelox library talks of a large, multicolored refractor dubbed the "Proto Refractor", and many have rumored it to be this refractor.

Aurora Stones
The Aurora Stones, known as Holy Pyroxenes (聖なる輝石) in Japan, are three Refractors from The Misadventures of Tron Bonne found in the Shala-Kun Ruins with different color and value. The Blue Aurora Stone is worth 50,000 Zenny, the Yellow Aurora Stone is worth 150,000 Zenny, and the Red Aurora Stone 500,000 Zenny.

Diana's Tear
Diana's Tear (ダイアナの涙) is a large Refractor from The Misadventures of Tron Bonne found in the Nakkai Ruins that is worth one million Zenny. Teisel Bonne went to the ruins to obtain it and pay his debt to Lex Loath, but Glyde captured him in the gate of the ruins. Tron Bonne can later obtain this Refractor and sell it.

Golden Refractor
The Golden Refractor (黄金のディフレクター) is a legendary Refractor used to power the Colossus in The Misadventures of Tron Bonne. After its defeat, the Servbots took it to the Gesellschaft and commemorate, but the favorite Servbot threw it in the trash by accident while cleaning the Storage Room.