>>56423481It's one and the same, the formless brilliantly bright light is Arceus the Deity and Creator. That the form of Arceus the Pokémon emerges as it sends Its Champion to Hisui through a crack in time and space prove that. it's all the one, the pokémon is but a shell the Deity takes while in the physical realm it created.
>"...And I bestow upon thee a part of myself. I would walk this world together with thee." 