Ah, no. Actually Revan is a part of the SW EU universe and DOES have a set face, personality, and gender. Unofficial word has come down from Lucasarts that the ending is meant to be lightside, male ending for KOTOR I. However, because officially declaring such an ending would ruin the character for a lot of people (And let's face it, Revan is uber popular) they've decided to keep it to themselves for now.