Omari Ishmael Grandberry (born November 12, 1984), better known as Omarion, is an American R&B singer, songwriter, dancer and actor. He is best known as being the lead singer of R&B boy band B2K; the group achieved success with singles like "Bump, Bump, Bump", which reached number-one 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 highest charting single to date, "Ice Box", which reached the top 20 on Billboard Hot 100. His third album Ollusion (2010) was released January 12, 2010 with the lead single "I Get It In". His fourth album, Sex Playlist (2014), spawned the single "Post to Be", which was certified platinum and reached the top 20 on the Hot 100 chart.
Omarion also ventured into acting, with appearances in films such as You Got Served, Fat Albert, Somebody Help Me and The Proud Family Movie.