Doublade

Doublade is a Steel-Ghost type Pokemon. It evolves into Aegislash if a Dusk Stone is used.

Biology
Doublade resembles two swords sheathed on a plaque. Each sword has a pink eye with a black, linear pupil on the hilt, as well as a pink, tassel-like arm emerging from the handle. The swords are able to communicate telepathically, and they use this ability to carry out complex attacks that are unstoppable even to those skilled at swordplay.

Trivia
Doublade and its evolutionary line have nine resistances and three immunities, making them and the Magnemite evolutionary line the most resistant Pokémon ever, as no other Pokémon have a higher total amount of resistances and immunities.