Henry Kanonta Buchanan (born August 5, 1978) is an American professional boxer.
Known as "Sugar Poo", Buchanan began his professional career in 2004, and was undefeated heading into a ShoBox Super Middleweight eliminator tournament, and lost to Jean Paul Mendy.
He was the featured boxers on the 3rd season of the boxing reality TV series, The Contender, The Contender (season 3), premiering September 4, 2007 on ESPN.
Episode that aired on September 11, 2007, said that for personal reasons, he would not participate in season 3 of The Contender. Buchanan later revealed that it was a business and financial decision, as his promoter did not want to surrender Buchanan's promotional rights to ESPN http://www.fightnewsextra.com/ac/williams1.
He is the uncle of San Diego Chargers linebacker Shawne Merriman.