Slanderus

Slanderus is a progressive metal force erupting from Southern California’s Inland Empire, with roots spanning Eastvale, Ontario, and Norco. Founded by guitarist and backing vocalist Jason J. Kennedy, the band delivers a sound that is as technically masterful as it is emotionally intense. Kennedy’s compositions overflow with complex guitar solos, crushing breakdowns, and intricate riffs that serve as the heartbeat of the band’s sonic identity.
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On drums, Owen Guercio commands his kit with an intuitive power that turns rhythm into raw emotion—his dynamic playing style flows with precision, depth, and undeniable passion.

Front man Allen Alamillo completes the Slanderus lineup with a voice that cuts deep. His vocals—marked by emotional intensity, soaring pitch range, and brutal honesty—convey lyrics that strike the soul. Together, the band crafts a sound that blends the progressive complexity of Dream Theater with the visceral edge of Slipknot and the melodic hooks of Iron Maiden, all while forging a signature style that’s unmistakably their own.

Slanderus made their live debut in 2009 at Angel's Roadhouse in Yucaipa, California. Since then, they've carved their name into the Southern California metal scene with unforgettable performances at venues such as Mission Tobacco Lounge (Riverside), The Venue (Grand Terrace), Character's (Pomona), Rockefellas (Corona), The Slidebar (Fullerton), Stages (Santa Ana), House of Blues Anaheim – Parish Room, and the legendary Whisky A Go Go in Hollywood. Their relentless energy has earned them a loyal fanbase and appearances at major events including the OC Fair and regional Battle of the Bands competitions.

In 2023, Slanderus took the stage alongside heavy metal titans Fear Factory, Lions at the Gate, and Metal Church at the Whisky A Go Go—an explosive moment in their upward trajectory. They continued the momentum in 2024 by opening for classic nu-metal icons Adema at The District in Redlands, California. In 2025, the band returned to the Whisky A Go Go to open for Swedish electro-synth group Priest, demonstrating their versatility and ability to captivate audiences across multiple genres of heavy and alternative music. In 2026, Slanderus made their House of Blues Anaheim debut, performing in the Parish Room as part of The Glow Show.

Their 2025 single "Poet of the Vine" showcases the band's fearless blending of styles, marrying aggressive riffs with melodic precision and an unmistakable progressive flair. With influences ranging from Anthrax, Queensrÿche, and Rush to Machine Head and System of a Down, Slanderus brings something fresh and fierce to every track.

Voted "Best Local Band of 2022" by Inland Empire Magazine, Slanderus has performed alongside nearly 100 other bands, expanding their musical reach and establishing a powerful presence in the metal community. Their mission is simple yet relentless: to bring heavy metal to the masses and deliver every show like it's their last—packed with raw energy, musical excellence, and a drive to leave crowds speechless.
Whether you're a lifelong metalhead or a newcomer to the scene, one thing is certain--Slanderus is a band you won't forget.