Robert Gabriel Helenius is a Finnish professional boxer. He has held multiple regional championships in the heavyweight division, including the European title twice between 2011 and 2016. As an amateur, he won a super-heavyweight silver medal at the 2006 European Championships. He holds notable wins over former world heavyweight champions Lamon Brewster, Samuel Peter, Siarhei Liakhovich and former European champion Derek Chisora.

Lamon Tajuan Brewster is an American former professional boxer who competed from 1996 to 2010. He held the WBO heavyweight title from 2004 to 2006, and is best known for scoring an upset knockout victory over Wladimir Klitschko to win the vacant title. He was ranked as the world's No.8 heavyweight by BoxRec at the conclusion of 2004. As an amateur, Brewster won the U.S. national championships in 1995, and a silver medal at that year's Pan American Games, both in the heavyweight division. Following his retirement from the sport in 2011, he became an entrepreneur and founded a consulting business.