Firebat

Firebat (real name James Kostesich) is a noted Hearthstone player, and winner of the 2014 Hearthstone World Championships, having defeated Tiddler Celestial in the finals in a straight 3-0 series.

Trivia
The card Fiery Bat was named after him.

Interviews

 * Getting to Know the Americas Finalists, Part II - Hearthstone World Championships (2014-10-29)