Giratina

Giratina is a legendary Pokémon appearing in Pokémon Diamond, Pearl and Platinum. Giratina was seen among the many Pokémon that were summoned in the trailer of Charizard and Greninja for Super Smash Bros. for Nintendo 3DS/Wii U. Like all other legendary Pokémon there is a higher chance of him appearing when out of a Master Ball.