Glo Gang rap group. The "4CGG" in his name stands for 4 Corner Glo Gang. Mane Mane is a member of the 4 Corner Hustlers Gang from the West Side of Chicago. Mane Mane has been involved in numerous beefs involving Chief Keef such as the one with Boss Top and O'Block.
Mane Mane VS O'Block Ocho
Chief Keef had a fallout with members of his gang from O'block, he Later claimed that he was gonna buy O'block and move their members around. Oblock Ocho called him on his statement and Mane Mane came to Chief Keef's help on twitter.