Shadow Lugia

Shadow Lugia (Japanese: ダークルギア Dark Lugia), codenamed XD001, is a Pokémon exclusive to Pokémon XD: Gale of Darkness.

It is a Lugia corrupted by the criminal organization Cipher, believed to be the ultimate Shadow Pokémon (the "XD" in its codename stands for "Extra Darkness") and completely immune to purification. As a sign of this corruption, its appearance is different from that of a normal Lugia, unlike other Shadow Pokémon who appear normal but possess a shadowy aura.