Is there only 1 of each Legendary Pokémon?

Is there only 1 of each Legendary Pokémon? It varies from legendary to legendary. Plus the anime handles things differently than the games. Some, like Arceus, it’s hard to argue that there could be more than one. Others, like Lugia, have baby versions shown in the anime.

It varies from legendary to legendary. Plus the anime handles things differently than the games. Some, like Arceus, it’s hard to argue that there could be more than one. Others, like Lugia, have baby versions shown in the anime.