Helluva Boss is an American adult animated musical comedy web series created by Vivienne "VivziePop" Medrano.

[17] Lucas Bermudez of Screen Rant attributed the success of Hazbin Hotel as the sole reason for Helluva Boss being greenlit.

[24] In response, entertainment site Newgrounds offered to host an uncensored version of the episode and promote it with "a front page banner", something which Medrano expressed interest in.

[32][33] The series has included celebrities such as Kesha, Norman Reedus, Mara Wilson, Alex Brightman and others as guest stars.

[43][42][44] The episode "The Harvest Moon Festival" introduced the character Sallie May, Millie's sister, who was confirmed on the show's official Twitter account to be transgender,[41][42] and by her voice actor to be lesbian.

[46] Helluva Boss was met with critical acclaim for its animation, characters, voice acting, songs, and humor.

[47] Another reviewer, also for CBR, Morgan Shaunette, described the series as "underrated", said that it is a "twisted take on the workplace comedy", and called it a "helluva strange ride".

[48] Tito W. James' of Comicon.com stated that demons having access to a portal that connects to the human realm "adds a new dynamic and is ripe for narrative potential".

[51] Zoe Dumas of MovieWeb argued that the series has "emotionally complex" characters, a talented and musical voice cast, and "outstanding" animation.

[42] Animation Magazine reported that the pilots of Hazbin Hotel and Helluva Boss had been, collectively, viewed over 65 million times by October 7, 2020.

[26] In February 2021, Medrano told Insider that Helluva Boss remains independent of Hazbin Hotel, stating she intends to keep it that way "as long as the audience wants to keep seeing it", adding that she has "a plan for where the story goes and ends".

[24] In 2023, scholar Ben Mitchell described the series as "sensationally popular" and an effective use of Patreon to subsidize the show's art "through monthly tiered payments".