Hayward, California metalcore and melodic death metal band formed in 2025, State of Reliance blends the hook-driven intensity of metalcore with the melodic riff vocabulary of death metal.

Stick to Your Guns formed in Orange County, California in 2003, developing a metalcore sound grounded in hardcore punk ethics, melodic hooks, and socially conscious lyrics. Their album Diamond (2012) debuted at number one on the Billboard Heatseekers chart, and Disobedient (2015) and True View (2017) continued the band's steady commercial and critical momentum. Across eight studio albums through Keep Planting Flowers (2025), the band has remained consistent in both sound and values, maintaining a connection to the hardcore underground while growing a larger fanbase. Vocalist Jesse Barnett's direct and earnest lyrical approach has been a defining constant throughout the band's career.

San Diego melodic death metal and metalcore act formed in 2004, blending aggressive riffing with melodic hooks in the tradition of the early 2000s West Coast extreme metal scene.

Rancho Cucamonga, California band formed in 2017 that merges death metal, thrash, and metalcore influences into an aggressive style rooted in the Inland Empire's active extreme metal underground.

Suppressed Intentions is a San Luis Obispo, California band formed in 2022, fusing metalcore aggression with groove and thrash metal to produce a hybrid sound rooted in the Central Coast's emerging heavy music scene.

Systematic Failure is a melodic death metal and metalcore band from Yreka, California, formed in 2017, blending the melodic sensibility and twin-guitar harmonies of melodic death metal with the rhythmic intensity of metalcore.

Los Angeles, California metalcore act formed in 2022, entering a city with an enormous and competitive heavy music scene and aiming to carve out space within contemporary metalcore's blend of crushing breakdowns and melodic tension.

Orange County's Throwdown began in 1999 as a force in metalcore and hardcore before evolving into a groove-heavy machine influenced by Pantera-style crunch, earning a loyal following across both worlds over two decades of punishing live performances.

Los Angeles metalcore outfit Thrown into Exile have been building a reputation in the sprawling Southern California scene since 2016, delivering punishing breakdowns and melodic urgency that pull from both hardcore and modern metal.