Oozaru

"Oozaru" is the term used to describe the giant ape like creature that Saiyans become during a full moon. An Oozaru will always portray evil and destructive characteristics even in the cases of the good Saiyans and Saiyanhalfbreeds[?].

An alternative and far stronger type of Oozaru, known as a Golden Oozaru, can be seen the Dragon Ball GT series.