>>57906508 (OP)Kanto doesn't have native legendaries, Mewtwo was created from Mew, Mew isn't from Kanto, Ho-Oh and Lugia are not kaiju, they're based on mythical creatures at best, a phoenix and a wyvern respectively, the Weather Trio are kaiju, but, before ORAS, they were not considered gods, they couldn't manifest land and water from nothing, Groudon 'created' more land by causing the sea level to drop, conversely Kyogre 'created' more sea by raising the sea level, these abilities affect the earth through the sky, intense sunlight and heavy rain, which is where Rayquaza comes in, those abilities fuck with its domain, Rayquaza's ability negates their weather altering abilities, indirectly saving Hoenn from natural disasters.
Gen 4 is the first time pokemon are ever referred to as legitimate deities and it, thankfully, hasn't happened again since, everything since gen 4 has either been an alien or is no more rare and powerful than Ho-Oh and Lugia are.
Giratina did not have to be the physical manifestation of antimatter and violence, it could've just been a spider/centipede monster, this sprite isn't of it flying, it's clearly crawling with how its tendrils move like spider legs.