RICHMOND, Calif. Six defendants accused in the gang rape of a 16-year-old Northern California girl have pleaded not guilty. The males, who range in age from 15 to 21, entered their pleas to rape and other charges Tuesday in Contra Costa County Superior Court. Three juveniles 15-year-old Cody Ray Smith, 16-year-old Ari Morales and 17-year-old Marcelles Peter are being charged as adults.