Omari Ishmael Grandberry (born November 12, 1984), known by his stage name Omarion, is an American singer, songwriter, rapper, actor and dancer. He is best known as being the lead singer of the American R&B boy band B2K; the group achieved success with singles like "Bump, Bump, Bump", "Uh Huh", and "Girlfriend", which all reached success on the Billboard Hot 100. After the group’s disbandment, Omarion released his debut solo album, O (2005), which debuted atop the Billboard 200 and received a Grammy Award nomination for Best Contemporary R&B Album at the 48th Grammy Awards. His second solo album, 21 (2006), contained his second highest-charting single to date, "Ice Box", which reached the top 20 on the Billboard Hot 100. His third solo album, Ollusion (2010), was released on January 12, 2010, with the lead single, "I Get It In". His fourth solo album, Sex Playlist (2014), spawned the single, "Post to Be", which was certified 3x platinum and reached number 13 on the Hot 100 chart in May 2015, and became his highest charting single to date.
Omarion also ventured into acting, with appearances in films such as You Got Served, Fat Albert, Somebody Help Me and The Proud Family Movie.