Intempestus is a black metal band from Gottingen, Germany, formed in 2024, pursuing atmospheric black metal from the university city of Lower Saxony. The band represents the newest wave of the Gottingen extreme metal scene.

Intended Execution is a brutal death metal band from Weiden in der Oberpfalz, Germany, active since 2014, delivering punishing extremity from the Upper Palatinate region of Bavaria. The band channels maximum brutality through a relentless, uncompromising approach.

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Intense Degree were a thrashcore and grindcore band from Mansfield, England, who emerged in the mid-1980s sharing stages with contemporaries Napalm Death, Heresy, and Bolt Thrower. The band attracted the attention of BBC Radio 1 DJ John Peel, recording a session for his program first broadcast in March 1988, and were notable for their blistering hardcore pace and an unusually prominent female bassist within the scene.

InTensity is a progressive metal band from Thessaloniki, Greece, active since 2010 and crafting ambitious, technically proficient compositions that push beyond conventional metal boundaries. The project channels progressive sophistication.

Interdiction is a thrash/death metal band from Dortmund, Germany, active since 2003, merging thrash metal's velocity with death metal's heaviness from the heart of the Ruhr Valley. Over two decades, the band has refined their dual-genre assault into a tight, devastating package.

Interdikt is a black metal band from Nymburk, Czech Republic, formed in 2022, pursuing atmospheric black metal from the Elbe-adjacent town east of Prague. The band represents a newer wave of Czech black metal, channeling the genre's cold intensity through a Central European perspective.

Interface are a grindcore and death metal band from Belfast, Northern Ireland, formed in 2017. They bring ferocious grinding extremity to the Northern Irish underground.

Interfear is a thrash metal/hardcore band from Wetteren, Belgium, formed in 2014, welding the velocity of thrash metal to the raw aggression of hardcore punk. The band delivers a relentless hybrid that channels both the Bay Area riff tradition and Belgian hardcore intensity.