The Fluid were an American rock band, from Denver, CO, formed in 1984. The Fluid reunited in the summer of 2008 for the first time in 15 years. They played at Sub Pop festival in Seattle, WA in mid July. The Fluid were originally called Madhouse, and became The Fluid upon the arrival of vocalist John Robinson. Their first show drew a large crowd of around 400 people, and they released their first album in 1986, Punch N Judy.