Beat the Elite Four and then go to Turnback cave(South of Veilstone along Spring Path)In there is an entrance to the distortion world where the Griseous orb lies. Make Giratina hold it and he will change into the origin form.
Giratina can be caught in different forms on different versions of Pokemon. The Origin form, I think you get from Diamond. I'm not entirely sure. But you have to catch it on different versions of Pokemon to get different forms of it.
its the point of origin
It means a place something originated from , for example if a person is Chinese and celebrate its traditions, then their geographical origin is China
Compute
Simply put, it doesn't. You are probably referring to shaymin's form change. You can change it's form by showing the lady in the flower shop in goldenrod city (there's a lady standing out side in Floroma town in platinum) the shaymin from a 2009 event.
Deoxys (Referenced As Pokemon #386 In The National Pokedex) changes forms via a variety of methods. In Ruby and Sapphire Deoxys will appear in Normal form, In LeafGreen it is shown in its defense form, FireRed shows the Pokemon in its Attack form and Emerald Shows it in its Speed form. Diamond, Pearl and Platiunum versions, Deoxys can be changed by increasing any of its Speed, Attack or Defense stats to change it to that specific type. To return it to normal type all stats need to be even/level. With HeartGold and SoulSilver Deoxys can be changed by coming into contact with certain meteorites in one of the main cities.
you need the item Griseous Orb fr giratina to change to Origin Forme and Normal Form
Giratina's origin forme is not present in Pokemon Diamond only it's Altered forme. Whilst you can still attach the Griseous Orb to it, it will only boost Giratina's stats ,not change it's form, to do that you need to play Pokemon Platinium.
You get a griseos orb by completinting a quest.Once you get it,equip it on to Giratina so he can stay in Origin form.
Giratina Altered Forme is a character form from the popular Pokemon game series. It is actually Giratina's altered form.
You'll need to let it hold a Grisious Orb.
You can't change Giratina's form in Pokemon Pearl (that includes Diamond). You can change Giratina's form in Pokemon Platinum (that includes Heart Gold and Soul Silver). You can change Giratina's form with the Griseous Orb. To change Giratina's form give Griseous Orb to Giratina and then take it off and Giratina changed its form.
In diamond and pearl giratina turn in the altered form, only in platinum it show its origin form
go to that mountain from shaymin village giratina is now origin! it wont be permanant but it only works on that mountain
to get giratina you need to go to the distortion world and catch it but when you go back to your world it will change it's form to altered form to keep it in it's original form you need to have giratina, beet the Pokemon league then go back to the distortion world and you will apper where you catched giratina,go down then you will see a pokeball go get it and it will give you the griseious orb now go back to your world again and give the griseious orb to giratina and it will change back to it's original form
Giratina can be transferred, but it wont be able to go into its origin form in pearl
The origin form is stronger due to the griseous orb.
The origin forme of giratina is a transformation of giratina, not an entirely new pokemon, so it shares its pokedex entry with Alternate Form Giratina. Thus if you want to look for its pokedex entry, go into the national dex and look for Giratina.