>>33255630You're right, having an unknown gender doesn't means it doesn't exist, maybe it does and we just don't know it, maybe the Metagross species has 5 genders and we just don't know about their existence, but that doesn't means they don't have a gender at all.
>>33255714"Unknown gender" may include pokemon who identify xirselves as a different gender belonging to an unknown gender species, like a Pikachu identifying xirself as a Metagross's unknown gender, that's a good example of a transgender pokemon falling under the "unknown gender" category my friend.