Helluva Boss is an American adult animated web series created by Vivienne "VivziePop" Medrano. The show is produced by SpindleHorse Toons. The show was initially released exclusively to Medrano's YouTube channel.
Helluva Boss revolves around the employees of I.M.P (Immediate Murder Professionals), an imp-run assassination company in Hell, on their many different jobs. The members of I.M.P include Blitzo, the boss of the venture, along with weapons specialist Moxxie, powerhouse Millie, and his receptionist hellhound/adoptive daughter, Loona. With the help of an ancient book obtained from Stolas, a Goetial demon of Hell, they access the human world to complete their tasks on order from demons in Hell.
The series' pilot was released on November 25, 2019, while the first episode of the first season premiered on October 31, 2020. The show's second season premiered on July 30, 2022. A remake of the pilot was released to Prime Video on September 10, 2025, alongside a re-release of the first two seasons, all of which are fully uncensored. The third season is set to be released in two halves, for a total of 15 episodes; the first premiered on October 14, 2026, and the second half set for 2027.