Instructor are a heavy/thrash metal four-piece from Salzburg whose music addresses pain, isolation, and social anger through dark, German-language lyrics. The band describes itself as serious and substantive, releasing material independently through Backstage PRO and their own channels.

Progressive/experimental thrash metal band from Grado in Asturias, active since 2009. Their playfully umlauted name signals an eclectic approach to thrash metal from northern Spain.

Insulator is a thrash metal band from Riga, Latvia, active since 2018 and delivering aggressive, riff-driven thrash with relentless intensity. The project channels the speed and fury of the genre.

Insulter is a thrash/black/death metal band from Friedrichsdorf, Germany, active since 2012, wielding a triple-headed attack that draws from thrash, black, and death metal simultaneously. The band delivers a savage, genre-blending assault from the Taunus foothills north of Frankfurt.

Black/thrash metal band from Sabadell near Barcelona, active since 2008 — over 15 years of blackened thrash from the Catalan industrial city.

Insurgency is a melodic thrash metal band from Lunen, Germany, active since 2014, pairing the speed and aggression of thrash with melodic hooks and harmonized guitar leads. The band channels the Ruhr-adjacent town's energy into accessible yet aggressive thrash compositions.

Insurgência is a thrash metal/crossover band from Amadora, Portugal, active since 2024 and fusing the aggression of thrash metal with hardcore punk's raw energy and attitude. The project delivers high-octane crossover fury.

Intaos is a black/thrash metal act from Chelyabinsk, Russia, active since 2023 and fusing black metal's corrosive darkness with the speed and aggression of thrash. The project delivers volatile crossover fury.

Integritlie are a black/thrash metal band from the Mondsee-Unterach area of Upper Austria who sing and write in the local Austro-Bavarian dialect, lending their aggressive thrash framework an unusual linguistic identity. Their 2017 self-titled album features tracks like "Todgeweiht" and "Flammeninferno," marrying raw black metal energy to driving thrash riffs.