well all i know is it has to be on an even generation... and it is easier to get with a young mimitchi...... i got mine by not feeding it any candy whatsoever except 3 pieces i gave it cause i was trying the thing to get a Nazotchi.
Oh haha thats what my first gen. got married to!! I didnt know thats what they were called, I just called it robot...hehe. But I know a couple of names, just not that