Vivienne Medrano (born October 28, 1992),[3] also known by her online alias VivziePop, is an American YouTuber, animator, writer, director, producer, and voice actress.

[4][5][6] Prior to joining YouTube, Medrano did assistant work on a thesis horror comedy film by Zach Bellissimo titled Blenderstein, in 2011.

Medrano launched her YouTube channel under the screen name "VivziePop" in 2012, building a dedicated online audience, who enjoyed her fanwork and original creations.

[11] Medrano released her fourth year thesis film entitled "Timber" in 2014, for which she won a Dusty Award in "Outstanding Achievement in Character Animation".

[24] In July 2020, Medrano released an animated music video for Hazbin Hotel called "Addict", featuring the Silva Hound song of the same name.

[29] In 2023, scholar Ben Mitchell described Medrano's Hazbin Hotel and Helluva Boss as series which were "sensationally popular" and an effective use of Patreon to subsidize the show's art "through monthly tiered payments".

[30] On September 30, 2020, Medrano released an animated short film titled "Bad Luck Jack", based on ZooPhobia.

[36] In March 2021, it was reported that she was a partner of Redefine Entertainment, a management company formed by Jairo Alvarado, Tony Gil, and Max Goldfarb.