Guide to Oblivion is a melodic thrash/death metal and metalcore band from Rottenacker and Ulm, Germany, formed in 2013, blending multiple aggressive styles into an accessible yet heavy package. The band has maintained over a decade of activity in the Swabian metal scene.

Guilhotina is a thrash metal band from Loures, near Lisbon, Portugal, chopping through riffs since 2008. Their name — Portuguese for 'guillotine' — signals their sharp, cutting thrash attack.

Swedish thrash metal act launched in 2021, delivering high-velocity riffing with the execution-themed intensity their name suggests. Their aggressive approach carries forward the spirit of classic thrash.

Guillotine is a Belgian thrash metal trio formed in 2016, operating under the Guillotine Dream name on Bandcamp, with a catalog that includes Lemuria, A War on the Passage of Time, and Blades Fall. The three-piece lineup of guitar/vocals, bass, and drums delivers a direct, riff-first thrash attack.

Guilty of Reason is a metal band from Strasbourg, France, spreading heavy/thrash/death metal and hardcore since 2004 with unwavering intensity. Their album Shades of Sanity (2013) was produced by Anthony Chognard and mastered at Kohlekeller Studios in Germany.

Gulah is a heavy metal and thrash band from the small town of Villardompardo in Jaén, Spain, formed in 2017, channeling old-school aggression through ripping riffs and raw energy. Their sound pays homage to the classic thrash and heavy metal traditions with a distinctly Spanish underground sensibility.

Gumbody is a thrash/heavy metal band from Horsens, Denmark, formed in 2020, delivering aggressive metal from the east Jutland port city. The band combines thrash energy with classic heavy metal foundations.

GumoManiacs is a thrash metal band from Regensburg, Germany, formed in 2007, delivering over seventeen years of Bavarian thrash metal from the Danube city. The band is a well-established fixture of the Regensburg metal scene.

Gung-Ho is a crossover/thrash metal band from Hildesheim, Germany, formed in 2011, blending skate-punk energy with thrash metal aggression from Lower Saxony. The band delivers fun, fast, crossover fury.