I Feel Sick is a two part full-colour miniseries written and drawn by Jhonen Vasquez and colored by Rosearik Rikki Simons. It is a spin-off of Vasquez''s popular Johnny the Homicidal Maniac series, and features Devi D. dealing with the same supernatural and/or psychological forces that drove Johnny to lunacy. Originally intended as a single paperback, it was later split into two issues so as to avoid compromising the length of the story. It was published by Slave Labor Graphics and has been reprinted multiple times.