Demoniac was a metal band from New Zealand formed by Lindsay "Behemoth" Dawson and Sam "Heimdall" Totman. The musical style of the band varied dramatically throughout their career. Their earlier output was mostly black metal influenced, while their later work consisted of power metal style guitars and melodies with black metal style screaming vocals, and in that respect showed similarities to Children of Bodom. Demoniac toured Europe with acts such as Enslaved and Dark Tranquility.

Behemoth played bass in the studio, but in the band's later days they used a succession of live session players to allow him to fully focus on his vocal performance. The eventually hired Diccon Harper as a full-time bass player, but the band split before he could record anything with them. Demoniac relocated to London in 1997 due to the lack of exposure for their style of music in their home country. It was after this that Herman Li joined the band as second guitarist. After Demoniac split, he and Sam Totman went on to form DragonForce. Harper and drummer Matej Setinc were also briefly involved in the new band, and Behemoth performed as a guest on their "Inhuman Rampage" album.