INSIDIUS is a death metal band from Olsztyn, Poland, active since 2012. Their music blends old-school and technical death metal with elements of black metal, creating a dark and intense sound. The band continues to build its presence through consistent touring and album releases. In 2016, Insidius released their debut album, Shadows of Humanity, as an independent release. The album showcased their raw yet structured approach to death metal, drawing from both classic brutality and modern precision. Their second album, Infamia, was released in 2018 via Ermland Productions. This release saw the band refining their sound, incorporating more complex arrangements and a darker atmosphere. Tracks like Swarm! and Raise Hell highlighted their matured songwriting style, helping them gain wider recognition.

Line-up:
Rafał “Tasio” Tasak: Vocals
Tomasz “Choina” Choiński: Guitar
Jakub “Janus” Janowicz: Guitar
Łukasz “Jankes” Usydus: Bass
Michał Andrzejczyk: Drums

Origin:
Poland