Giratina

Giratina is one of the 493 types of Pokemon species. The species first appeared in the fourth generation of games, Pokemon Diamond and Pokemon Pearl. He is one of the many Legendary Pokemon introduced in Generation Four. It seems to be named after either the Guillotine or the girasol, a type of Opal.

Description
Giratina is a large centipede-like Pokemon with short legs. It also has wings that it may use to use Fly. Certain characteristics of it resemple those of it's fellow Legendaries, Palkia and Dialga, including it's crown shaped footprints, it's unique eyes and its status as being named after a type of gem. Giratina is found in Turnback Cave, a maze like cave. To catch Giratina, you must pass three pillars before passing through thirty rooms. Giratana is a Dragon-Ghost type Pokemon, the first Legendary to be Ghost type. As a Ghost type, it learns Dark, Ghost and Electric type moves. Despite being a Dragon type, it doesn't learn any Fire, save Willl-'O-Wisp, or Ice type moves naturally. It can, however, learn the Draco Meteor move available only to Dragon types. It is the only Pokemon to learn the move Shadow Force, a move that allows the user to disappear and reappear to cause damage to the opponent.

Alternate Forms
Giratina has a secondary form that will be showcased in the Pokemon movie Giratina and the Sky Banquet: Shaymin. This form resembles a centipede more so than his regular form. As it has yet to be shown in games, it's abilities are still unknown.