Grogiass

His full title is “Grogiass Destroyer Of Life” but he’s just chonk

1000+ years old
30"5 feet tall (base form)
OH LAWD HE COMING 

Mind manifestation that calmed down and gained a physical form, why did they choose a chonky giratina? Nobody knows.

He originally was a mind manifestation capable of destroying thoughts and changing them. but slowly transformed into a more feasible being being able to hop through dimensions mostly between worlds. He mostly stays in the main mind hub area in his own little space.

Nobody quite knows why he decided to take the form of a Giratina.

He later adopted Luna, essentially becoming his daughter.