He was an American rapper, singer and songwriter.

Born and raised in Plantation, Florida, Onfroy spent most of his childhood in Lauderhill. He began writing music after being released from a youth correction center and released his first song on SoundCloud in June 2013, titled "News/Flock". He was a popular figure in SoundCloud rap, a trap scene that takes elements of lo-fi music and harsh 808s.

Onfroy released his debut album, 17, on August 25, 2017. Onfroy's second album, ?, was released on March 16, 2018. It debuted at number one on the Billboard 200, with its singles "Sad!" and "Changes" peaking at numbers seven and 37 on the Billboard Hot 100 respectively.

Onfroy was shot and killed on June 18, 2018, after leaving a motorcycle dealership in Deerfield Beach, Florida.