I never knew about the Mew glitch at first. I realized the glitch while playing my Emerald Mew was one of my favorite legendary PKMNs, so I searched on YouTube the Mew glitch, but it was already over...I already fought the trainers on the route a long time ago, so I couldn't do it. I didn't want to restart the game, I was too lazy to do it. And I never had a Mew on my team :'( . Only got him with Action Replay/ Gameshark.