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.
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.
The pokemons birthday is the day you caught them. Your starter pokemons birthday is the day you started your adventure
n e where
in n's castle
at n's castle.