Moriah Rose Pereira (born January 1, 1995), known professionally as Poppy and formerly That Poppy, is an American singer, songwriter, musician, and YouTuber. In 2014, she rose to prominence by starring in performance art videos that presented her as an uncanny valley-like android entity who commented on and satirised internet culture and modern society. The videos achieved viral fame. In 2015, she signed a recording contract with Island Records and released Bubblebath, her debut EP, in 2016.

In 2017, Poppy signed to Mad Decent and released her debut studio album, Poppy.Computer, which consisted of art pop and bubblegum pop songs. To promote the album, she embarked on the Poppy.Computer Tour across North America. In 2018, Poppy released the pilot for the proposed surreal comedy online series I'm Poppy on YouTube Premium. She also released her second studio album, Am I a Girl? In stark contrast to her first album, Am I a Girl? began to show a heavy nu metal influence.

In 2020, Poppy released her third studio album, I Disagree, through Sumerian Records, shifting her style even further away from pop to a sound incorporating heavy metal and industrial music. I Disagree featured visuals in her music videos which some critics described as "increasingly disturbing", "violent", and "macabre", continuing a shift in her music videos that had begun with her second album. In 2021, Poppy received a Grammy Award nomination.