Markko Rivera is a fictional character from ABC's daytime drama One Life to Live, portrayed by Jason Tam since May 21, 2007. Tam last aired as Rivera on November 10, 2010, when he left town to continue studying at UCLA. He returned on April 11 and 12, 2011, to coincide with Wilde's exit and on July 28 and 29, 2011, for his Vicker Man film premiere. He made an appearance during the final episode of the show on January 13, 2012.