there are no birthday of Pokemon
you can't find N in pokemon indigo. N is the second main antagonist (=villain) in pokemon black and white.
December
No, N is fully human.
N is a PERSON
There is no M there is a N but there is a N.
The pokemons birthday is the day you caught them. Your starter pokemons birthday is the day you started your adventure
You will encounter N many times in Pokemon Black & White.
N goes to a deferent Pokemon region to try to not be like he was.
n e where
in n's castle
at n's castle.