I change my avatar from time to time but I have been going with this one for a while now. It is Ryu, one of the characters from the video game Street Fighter II.
My son played that video game often with me back in the early 1990`s and although he was around five years old at the time, he beat me handily almost every time. Despite that awful parenting involving that kind of video game, he has also turned out just fine. The avatar reminds me of those days.
The avatar also projects a macho image that is not at all like me in real life. That`s another reason why I like it.
The "Sun Warrior" title comes from the yoga position of that name. My wife got me interested in yoga about six years ago and I do it regularly.