He's one of, if not the most well-known character specialist. Tom Brady has recently made another BradyCast and this time he states it's his final review of the character he specializes in; Sub-Zero. Ever since Mortal Kombat 9, Tom has devoted his resources, energy and skill into the Sub-Zero community. In fact, the Sub-Zero forums are often the largest due to this.
In this video, Tom Brady discusses the ins and outs of "why" and his overall feelings on the character. If you can lend 30 mins to view this cast, it will be worth your time.
Video/Tutorial - Sub-Zero BradyCast - Tom Brady's final review of MKX Sub-Zero