Souta

Souta was a member of the Ghoul Restaurant, where he went by the alias PG. He hides his face with a clown mask. It has been revealed that he is from the Pierrot before being a member of the Ghoul Restaurant. He was revealed to be the one who caused the "accident" that led to Rize's kakuhou being implanted in Kaneki. (Source: Tokyo Ghoul Wikia)