Mark Makora Mbogo (born September 23, 1997), known professionally as KayCyy or KayCyy Pluto, is an American rapper and singer. Born in Kenya, Mbogo moved with his family to Minnesota at an early age. Throughout his career, he has released five mixtapes, and several singles with his debut studio album Who Is KayCyy? set to release within 2026. KayCyy has worked as a writer and credited vocalist alongside several major artists, including Kanye West, Lil Baby, Lil Wayne, and Travis Scott amongst others. Most notably, KayCyy had a large contribution towards the production of West's tenth studio album Donda, writing and recording references for a multitude of tracks.