Yeah, that's right, Giratina has another form that's gonna be in movie 11, along with Shaymin which also is said to have an "Origin" form. Apparently Giratina's normal form is called his "Another" form. It also says that Giratina changes into this form while travelin' between dimensions.
Bulbapedia Giratina's Origin Form:
Cool ain't it? Do you think this form of Giratina is goin' to be obtainable in D/P or in future titles along with Shaymin's rumored "Origin" form?
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