In 1990, King founded the St. Paul, Minnesota-based Nightmare Records, which specializes in hard rock, progressive metal and power metal and has a large selection of positive metal, spiritual and Christian metal bands and artists from around the world. Nightmare has licensed 100's artists and has distributed thousands of releases over the years. King founded the label originally to release Gemini's self-titled album, not wanting to turn over all rights and creative license to many major labels and managers he encountered in the late 1980s.