Passage: Kubrat Venkov Pulev (Bulgarian: Кубрат Венков Пулев; born 4 May 1981) is a Bulgarian professional boxer. He held the European heavyweight title twice between 2012 and 2016, and has challenged once for the unified world heavyweight title in 2014. As an amateur he won multiple medals at international tournaments, including gold at the 2008 European Championships and bronze at the 2005 World Championships, all in the super-heavyweight division.

Question: What famous Bulgarian boxer was born on 1981?
Kubrat Venkov Pulev