G.D.R. is a death metal and grindcore band from Smolensk, Russia, active since 2013 and merging the brutality of death metal with grindcore's chaotic velocity. The project delivers relentless extremity from western Russia.

G.O.E. is a black metal/grindcore band from Sesto Fiorentino near Florence, active since 2000. A quarter century of extreme metal from the Florentine suburbs makes them one of the most enduring acts in the Tuscan underground.

G.O.R.E is a death metal and grindcore project from Karvina, Czech Republic, formed in 2022, operating under the Viscera and Vapor name on Bandcamp. The project channels extreme, visceral grind with a focus on raw intensity.

G.T.I. is a death metal and grindcore band from Nantes, France, formed in 2022, channeling fast, aggressive extreme metal with a punk-infused ethos. Their sound blends deathgrind's brutality with the raw, unpolished energy of the underground.

G.Z.P is a goregrind duo from Marne La Vallée near Paris, France, formed in 2018, consisting of Ré on guitar, bass, and vocals and Loïc on drums. Their 2021 album Brain Bucket features thirteen tracks of extreme goregrind with guest vocalists from Brutal Sphincter, Pendrak, and Holy Cost.

Gadget is a grindcore band from Gävle, Sweden, active since 2008. They deliver relentless blastbeat-driven extremity from this city on the coast of the Gulf of Bothnia.

Gaf is a grindcore and death metal band from Helsinki, Finland, active since 2008, blending grindcore's short-burst aggression with punk energy across releases like Mongofied (2008), Cultivate Disdain (2010), and Gore 'n' Feast (2015). Their sound is fast, filthy, and uncompromising, with an Entombed cover on their latest record nodding to Swedish death metal roots.

Galvanizer is a Finnish grinding death metal band from Laitila, active since 2013, featuring Vili Mäkinen, Aleksi Vähämäki, Osmo Laaksoharju, and Nico Niemikko. Their catalog spans seven releases from Ground Above through splits with Morbific to the Promo 2024, delivering relentless, aggressive death-grind.

Gamborimbo is a goregrind trio from Osnabruck, Germany, formed in 2022, whose debut Fiesta Mexicana (2022) packs thirteen tracks of humor-laced goregrind into thirty-six minutes. The three-piece of Stefan (drums), Paddy (guitar), and Chewie (vocals) self-produced the album.