>>15375682>the anime has shown them to be able to breed (Lugia)I refuse to consider anything involving that terrible mini arc with Ritchie is canon. Ever.
That said, the Mystery Dungeon games portray EVERY legendary as male, except the following:
Celebi: Female, though it was shiny. It's probably not unrealistic to say something that time travels is not a unique species, either
Articuno: Never mentioned
Zapdos: Never mentioned
Moltres: Never mentioned
Mew: Never mentioned
Entei: I think they said male, but I don't remember
Raikou: Never mentioned
Suicune: Never mentioned
Regirock: Genderless
Regice: Genderless
Registeel: Genderless
Uxie: Never stated, afaik
Mesprit: Never stated, afaik
Azelf: Never stated, afaik
Regigigas: Never mentioned, but probably genderless like the Regi trio
Cresselia: Female
Shaymin: I never played Sky.
Phione: Legendary status debatable. Gender is never mentioned
Arceus: Isn't present except in Sky (as a statue), and even then, not mentioned