Prime Video has added all episodes of darkly hilarious series that is said to be binge worthy and features a Walking Dead star in a guest role.
Helluva Boss can now be streamed on the retail giant's platform after previously only being viewable on Youtube, meaning the fan-favourite series has found a new home for UK viewers.
Originating from the web series created by Vivienne Medrano, the series broadens the animated universe that started with Hazbin Hotel, also available on the platform.
As of this Wednesday (10th September), the first two seasons have been added to the catalogue.
An exclusive bonus episode titled Mission: Zero will also be accessible solely on Prime Video for 45 days before it becomes available on YouTube.
An additional two seasons are currently in production and will premiere on Amazon's streaming service first.
Set in the bustling underworld city of Hell, Helluva Boss follows Blitzo and his assassination startup I.M.P. (Immediate Murder Professionals). The company's diverse employees undertake human-world contracts whilst managing their own chaotic lives. The series combines outrageous violence with workplace comedy and delves into Blitzo's complex relationship with demon prince Stolas, reports the Mirror.
Helluva Boss features voice actors Brandon Rogers (Class Acts) as Blitzo, Richard Horvitz (Invader Zim) as Moxxie, Vivian Williams (Grey's Anatomy) as Millie, and Erica Lindbeck (ThunderCats Roar) as Loona.

The cast also includes Bryce Pinkham (Mercy Street) as Stolas and Alex Brightman (Hazbin Hotel) in guest roles.
The Walking Dead Star Norman Reedus also makes a special appearance in a recurring role for the first season, as does Erika Henningsen who played Ginny in Netflix comedy The Four Seasons.
Having begun as an online programme, it lacks sufficient professional critiques to achieve a rating on Rotten Tomatoes.
Nevertheless, numerous fans have expressed their views online, with many declaring it amongst their absolute favourites.
One viewer declared: "Helluva Boss is the type of show every adult animation should aspire to be. It doesn't rely on cheap laughs and shock humour like Family Guy and South Park. The writing is mixed with extensive backstories, lore, and character development. Far different from many adult cartoons."
Another commented: "This is a truly spectacular display of what can happen when you give adult animation power. The characters are darkly humorous, and the antagonists always seem fresh and more unique then the last."
Attempting to describe what audiences can anticipate, one enthusiast wrote: "If you're new to the show: It is Dante's Inferno plus Disney animation plus Deadpool. It is a real treat to watch something produced so boldly and enthusiastically. Vivziepop, the voice actors, and everyone who works on this project clearly love it, and that energy infuses every single one-liner, every single scene."
Meanwhile, another viewer enthused: "Darkly hilarious and binge worthy. Had me hooked from the pilot episode. The animation, songs and story lines are superbly done. It has range and depth that I find absolutely stunning coming from an independent creator. It is everything missing in similar attempts from the "bigger" more "well known" creators."
Helluva Boss is streaming on Prime Video.
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