N's Reshiram - Pokémon Generations (2016)

Listed as the Vast White Pokémon, Reshiram was one of three legendary dragons in the Unova region, making up the Tao trinity. A being of ice and draconic magic, their body was said to have been destroyed in battle many years ago and sealed in the Light Stone. Remaining petrified, it was said that only a hero with a firm belief in truth could awaken them from their slumber.

Ultimately released by the trainer N, Reshiram became his faithful partner, able to communicate with one another.

Sensing that Kyurem's power was being exploited and abused, they carried N to the Great Chasm, standing alongside the former Team Plasma monarch as he attempted to end the machinations of his adopted father Ghetsis.

Neutralising Kyurem's blizzard with a single blast, he was forced to take to the skies after Ghetsis activated the DNA Splicers. However, despite their best efforts, they were struck by one of Kyurem's energy blasts and reverted into the Light Stone. They were quickly absorbed into Kyurem's body, bonding the two and transforming them into White Kyurem.

Although incapacitated within White Kyurem's body, Reshiram was still able to call out to N, reassuring his friend that the process could be reversed.

The Light Stone - Pokémon Generations (2016)

An artefact of great reverence, the Light Stone was formed when the body of the legendary dragon Reshiram broke down and calcified. Containing the essence of the deity, it was said that they could only be restored when a hero embodying the desire for the truth emerges.

After Reshiram was exposed to the power of the DNA Splicer, they were regressed back into the Light Stone, leaving them vulnerable to be merged with Kyurem and transform the Boundary Pokémon into one of its two ultimate forms; White Kyurem.