Metalcore is a fusion genre that combines elements of extreme metal and hardcore punk. It is characterized by heavy guitar riffs, breakdowns, and a mix of harsh and clean vocals. The genre often explores themes of personal struggle, social issues, and emotional expression.

Deathcore is a fusion genre that combines elements of death metal and metalcore. It is characterized by heavy breakdowns, blast beats, and growled vocals, often incorporating technical guitar riffs and complex song structures. Deathcore emerged in the early 2000s and has since gained a significant following within the metal community.

Post-Hardcore is a subgenre of hardcore punk that maintains the aggression and intensity of hardcore while incorporating more experimental and melodic elements. It often features complex guitar work, dynamic song structures, and a blend of clean and screamed vocals. Bands in this genre explore a wide range of themes, from personal struggles to social issues, and frequently push the boundaries of traditional hardcore music.

Djent is a subgenre of progressive metal known for its distinctive high-gain, palm-muted, low-pitch guitar sound. The term "djent" is an onomatopoeia that mimics the sound of this guitar technique. Djent often incorporates complex rhythms, polyrhythms, and unconventional time signatures, drawing influences from progressive rock, metalcore, and jazz fusion. Bands in this genre frequently experiment with atmospheric and ambient elements, creating a unique blend of heaviness and melody.