Leon "Roccstar" Youngblood Jr. is an American music producer, songwriter, recording artist and rapper.

Youngblood has written and produced songs for artists such as Chris Brown, Post Malone, Usher, Rita Ora, Fergie, Prince Royce, Kendrick Lamar, J.Lo, and Melissa Etheridge.

[6] Roccstar was a cast member on Vh1’s ‘Love and Hip Hop: Hollywood’ and currently a guest star on Vh1’s ‘Basketball Wives’ series.

[citation needed] In 2013, Youngblood began working with Chris Brown, producing and writing alongside Diplo and Timbaland and landing six songs on Brown's album X, including the lead single, "Fine China".

Youngblood wrote multiple tracks for J.Lo's album in 2014, and is currently working with a number of other prominent artists.