Guiyii was made when Weegee was staring into a mirror. Guiyii is a clone of Weegee. He could be considered as the other "son" of Weegee. For some reason, he cannot stare or say "Fire Flower", but he can use MINDNUKES!!!!!! When he uses this, someone's brain explodes.
He has a strange weaker form called New Guiyii.