How do you find mew in Pokemon fireredleafgreen?

You don't find it. you have to go to a special Nintendo event that happened a few years ago. you CAN get mewtwo though, by going in the cave in the city with misty for the gym leder.

You don't find it. you have to go to a special Nintendo event that happened a few years ago. you CAN get mewtwo though, by going in the cave in the city with misty for the gym leder.