Hernandez rose to mainstream fame in late 2017 with the release of his debut single "Gummo", which was certified platinum by the RIAA. In early 2018, Hernandez released his debut mixtape, "Day69", which debuted at number 4 on the "Billboard" 200 album chart. He later earned his first top-five entry on the "Billboard" Hot 100 with "Fefe", featuring Nicki Minaj and Murda Beatz, which peaked at number three on the chart. His debut studio album, "Dummy Boy", was released on November 27, 2018, after being delayed a week earlier due to his arrest, and debuted at number two on the "Billboard" 200 chart.