Keldeo - Pokémon Black & White (2010)

Once living in the Moors of Iccirus during a time of war in Unova, the young Keldeo was separated from their parents during a forest fire. While wandering around the woods in despair, they were taken in by Cobalion, Terrakion, and Virizion who raised them as their own.

Training and honing their skills, Keldeo very soon developed a hidden power that surpassed their mentor. It was said that during combat, they primarily used their legs for heavy attacks.

As well as this, they could glide across rivers and oceans at great speeds, often appearing before humans at the most beautiful of waterfronts. However, soon after, he disappeared from the group and was not seen again for many years. Many believe they went off to seek adventures on their own, making themself stronger with intense battles; something which is noted with the development of their horn.

Found by Pokémon Rangers in the wilds of Unova, Keldeo befriended the humans and lived alongside them. Wanting them to explore the region and grow alongside Pokémon trainers, they were gifted to Hilbert and Hilda.

After the two trainers assembled the Swords of Justice, they returned to the Moor of Icirrus. Whilst Keldeo cantered around the grassland, an elderly gentleman appeared and explained their history. Once finishing the tale, he watched in delight as the trio taught the Colt Pokémon the unique move Sacred Sword.