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 is considered to be the son of Weegee and brother of Samaweegee.He was adopted by 4tren, and now has a brother named Marreoh.

He has a strange weaker form called New Guiyii.