G Boys (GiriGiri Boys) are a gang in Ikebukuro. Takashi Ando is their leader.
History[]
The gang was formed by Takashi. At one point Yamai challenged Takashi to a fight, but lost. After that he temporarily joined the G Boys, doing various humiliating jobs for them.
Takashi invited Makoto Majima to join them, but he refused. After Rika's death, Makoto agreed to work with Takashi in order to catch the serial killer.