Hideki Kato, known professionally as Crack Fierce, is a Japanese noise musician. He began his musical journey in 1996 with the formation of Crack Fierce and established United Syndicate, an independent record label. His debut album Vagina Starving was released under United Syndicate that same year. In subsequent years, he released the split album Crowded Noise with Armenia. Kato worked under different aliases, including C-Fat with Two Assistant Deputy Ministers for the album Untitled (2004) and Flip Flop for the album Interior A Priori Estimate. In 2008, he released his album Red Flag through Noise Ninja.