Generation VI introduced 72 new Pokémon reaching total of 721 Pokémon. Pokémon New Pokémon Main article: Category: Generation VI Pokémon Yveltal symbolizes Quetzalcoatl, the serpent god of the Aztec people. The two legendary Pokémon that are the mascots for Pokémon X Version and Pokémon Y Version have been officially named: Xerneas is a deer-like Pokémon who is blue with rainbow antlers, who is shaped like the letter X when its legs are apart, while Yveltal is a bird-like avian of some sort, who is shaped like the letter Y. It evolves into Quilladin and then Chesnaught.