Marquis Amonte King, known by his stage name Shy Glizzy, is an American rapper from Washington, D.C.. He was also chosen as part of the XXL Magazine 2015 Freshman Class. On December 12, 2012, Shy released his mixtape Fxck Rap and ATL rapper Trinidad James appears on the track "Pilot." The Fader describes Fxck Rap as "an appealingly eager tape."

On August 2, 2013, Shy Glizzy dropped his mixtape Law 2, a follow-up to his previous mixtape. The 14-track project features Migos, Yo Gotti, Kevin Gates, Starlito, and more. The following producers soundtracked the project: Karltin Bankz, Izze The Producer, Rick Flare, Metro Boomin, Big K, YB, Beezy, Rico Beats, Lil Lody, LG The Producer.

On February 17, 2014, Shy Glizzy released his mixtape Young Jefe, an 18-track tape hosted by DJ Bigga Rankin, and featured production from Zaytoven, Cardo, Roger Beat and others. From that mixtape, the hit single “Awwsome” turned into the biggest song of Glizzy’s young career. It spawned a remix off the record that features A$AP Rocky and 2 Chainz that grabbed more than 750,000 streams on Soundcloud in the first week it dropped. The mixtape also features "Medellin" with Young Scooter, as well as appearances from Young Thug, PeeWee Longway, Zed Zilla, Gudda Gudda, Plies and more. It was produced by Cardo, Will A Fool, Zaytoven, Nito Beats, Rudy Glizzy and Irvin Glizzy and Tay Glizzy .