He's actually a version of a Franklin Richards character from a story Mary was involved in her early apa days. Later Mary and I updated that "New Fantastic Four" into our "Vagabond IV" apa fiction series, and he was an Asian-American named James. The general idea was that he had immense powers but not the skills to control them, so his challenge wasn't generating enough power, but enough control. Blocked out of his memory were some tragic events from earlier in his life where he failed to adequately control his powers.
It was frustrating to learn that shy, timid Asians are considered a stereotype, because that was basically our handle on Dragonmage. So we played down the shyness a little, but didn't significantly change what we had in mind for him.