The reason why I specifically mentioned that it cannot fly is because of a funny scene from the 18th Pokémon movie, "Hoopa and the Clash of Ages." In this scene, Hoopa mischievously teleports a bunch of legendary Pokémon together, and after a series of events, Arceus appears and calms down the angry Pokémon. Everyone goes back to their respective homes, and then there's a shot of all the legendary Pokémon flying away, except for Groudon, who is left standing alone on the sea.
Follow me and let's discuss Pokémon together. I really value your likes, bookmarks, and shares!!!