GamerGhazi is a reddit community that consists of SJWs and opponents of Gamergate, in order to mock Gamergate and NYS and support the perceive victims of Gamergate. The community was form during September 22, 2014 on reddit.
The reason why the Gamerghazi name as such is a reference to the Benghazi "scandal." A conspiracy theory that the government was responsible for the 2012 attack on the US' embassy in Benghazi. Much like how "Gate" is appended to modern scandals, "Ghazi" is appended to manufactured, ridiculous scandals. 
Role in GG
To those in Gamerghazi, they see Gamergate as people who could not accept female and minority acceptance into the gaming world. Many of these accounts within Gamerghazi supports these claims, which came from very biased perspectives that provided little evidence or discussion. Most of their opinions are based on purely personal engagements, since there's some rude, immature, and childish people in online gaming. In addition, trolling is not uncommon in gaming these days, however, the act of trolling has gone from doing something clever or manipulative, to downright toxic behavior in order to gain ANY reaction whatsoever. Ghazi residents are convinced that this form of trolling is what the gaming community is and, in turn, Gamergate is defending it. Personal vendettas can create insatiable spite and its hard to talk someone down, who knows how to use it to manipulate people. For Ghazi, Gamergate's identity was trolls and those that defend them, allowing them to spread their toxicity throughout the gaming world and keeping women out of gaming.
Gamerghazi's "Evil Twin"
Despite the name similarities, GamerGhazi on VOAT is were the neutrals, those on the fence, and pro-GamerGaters hang and debate GamerGate and other topics; it is even controlled by them. Just like Reddit's "Against Gamergate" community.