Cristiane Justino Venâncio (born July 9, 1985), known professionally by her ring name Cris Cyborg (and formerly by her married name Cristiane Santos), is a Brazilian-American mixed martial artist. She is the former UFC, Strikeforce and Invicta FC World Featherweight Champion. Cyborg first rose to prominence when she won the Strikeforce title on August 15, 2009, by defeating Gina Carano via first-round technical knock-out (TKO).