Brian Barczyk Brian Barczyk is YouTube's resident reptile expert. He has collaborated with several of the platform's biggest creators, and has over 2.4 million subscribers. Barczyk is basically fearless when it comes to animals, even when faced with deadly black mamba snakes or a herd of curious white rhinos. "I never feel more alive than when I'm on the end of something that could potentially kill me," he told Insider. Barczyk is in the process of doubling his animal zoo, where visitors learn how intelligent reptiles can be — playing with a ball, coming over when they're called, and reacting to hand signals. As an animal lover, Barczyk doesn't have a favourite.