Zyklon was an industrial death/black metal band from Notodden, Norway, active from 2001 to 2010. Featuring members of Emperor and Myrkskog, including drummer Trym and guitarist Zamoth, they released acclaimed albums "World Ov Worms," "Aeon," and "Disintegrate."

Zyklon X is a thrash metal band from Düsseldorf, Germany, formed in 2017. They deliver high-speed, riff-driven thrash metal fueled by the aggressive spirit of the German thrash tradition.

Zyklop is a death metal and grindcore band from Klagenfurt am Wörthersee, Austria, formed in 2014. Their releases, including "Pfui Retro!" and "Er war innerlich am Pogen," showcase a punishing blend of grinding extremity and guttural death metal.

Zylum is an industrial/doom metal band from Nenagh, County Tipperary, Ireland, formed in 2015. Their four-piece lineup brings "all the aggression and power" of various metal styles to the Munster metal scene, fusing industrial textures with doom metal weight.

Zymosis is a black metal band from São Miguel in the Azores, Portugal, formed in 2012. They bring extreme metal from one of Europe's most remote archipelagos in the middle of the Atlantic Ocean.

Zyphra is a heavy metal and hard rock band from Madrid, Spain, formed in 2014. Fronted by vocalist David Aldana and guitarist Samuel Castillo, their three albums — "Ciudad sin Ley" (2014), "Revolución" (2017), and "Fuego Prohibido" (2022) — deliver heavy metal in its purest essence.

Zyprexa is a thrash metal and crustcore band from Lahti, Finland, formed in 2012, aiming "to play as vile and nasty hojocore as possible." Their five albums, from "Saasta" (2013) to "Tämä oli tässä" (2023), showcase relentless crossover aggression blending thrash, crust punk, and hardcore.

ZZ Stop is a heavy/speed metal band from Mykolaiv, Ukraine, formed in 2018. They blend the energy of heavy and speed metal with Oi! punk influences for a raw, street-level approach to metal.

Zëptenvr is a raw black metal project from the French Alps, describing themselves as "the evil that breathes from the witches mouth." Their demo-tapes "Couronees dans lòpprobre" (2021) and "Messe pour un mort-né" (2023) channel nocturnal, magical black metal inspired by Darvulia, Moëvot, and early Nëhemah, exploring local Alpine folklore around witchcraft.