Did you know that Zekrom and Reshiram represent Yin and Yang in the Pokémon world.
Then there's Kyurem who represents Wuji which is the absence of Yin and Yang.
All three are known as the Tao Trio.
* Yin = Light = Reshiram
* Yang = Darkness = Zekrom
* Wujj = Absence = Kyurem
