Niantic have confirmed that the two forms of Giratina will return to Pokemon Go. Both the Origin Form and Altered Form of Giratina will be available in raid battles.
Giratina Origin Form has now replaced Giratina Altered Form in raid battles. This is the first time the Origin Form has been available in Pokemon Go.
In terms of battling it, little has changed, it is still susceptible to its own type, namely ghost and dragon-type Pokemon. This of course includes the likes of Rayquaza, Salamence and Gengar.
The dual-type ghost and dragon Pokemon was first introduced in Gen 4. It was the featured Pokemon for Pokemon Platinum, just as Palkia and Dialga were for Pokemon Pearl and Diamond respectively.
Giratina shares similarities to Deoxys whereby it has more than one form. In Giratina's case it has two formes. What's the difference between Giratina's two forms though?
A little confusingly, Giratina's Altered Form is actually it's original form. This is how Giratina appears in the normal Pokemon world.
As a raid boss it has a CP of 38,326. Outside of raid battles its max CP is 3,379. It also boasts 187 attack, 225, defense and 284 stamina.
Giratina's Origin Form, not to be confused with original form, is the form it takes in the Distortion World. From a physical perspective it loses its wings and legs.
Its raid boss CP is higher than its Altered Form with 41,776. It also has a higher max CP of 3,683. Interestingly, it has the same base stats too, but its defense and attack stat is switched around.
Both of Giratina's forms will be available at the following times in Pokemon Go raid battles:
The best Giratina counters (both forms) are Rayquaza and Palkia. Both Rayquaza and Palkia have excellent base stats and utilize powerful dragon-type moves, making it very effective against the Gen 4 legendary Pokemon.
The other options for Giratina raid counters include Dragonite, Salamence and Dialga.