Do you remember the "mew glitch" for the old red and blue pokemon games?

How is that a "glitch".



Mew is a developed character in the game so he was put there on purpose by somebody. But I read when nintendo found this out they removed the glitch in newer pokemon games.



So basically who put the glitch there if not nintendo? Was it some rouge developer?Do you remember the "mew glitch" for the old red and blue pokemon games?
That is basically it. Mew was the guy's favorite pokemon and he wanted to put it into the game.