I Feel Sick is a comic book created by artist Jhonen Vasquez, with colors by Rosearik Rikki Simons. Published in August 1999 through May 2000, it is a spin-off of Vasquez's comic book series Johnny the Homicidal Maniac. I Feel Sick revolves around Devi D., who first appeared in Johnny the Homicidal Maniac. Devi, a graphic designer, must face the supernatural and psychological forces that drove Johnny C. to lunacy.