Whatever name you know her by, she stays the same! She is moody and unpredictable! During most of our Yu-Gi-Oh "Saga" she is reluctant to let her feelings show towards anything. But eventually warms up to people.
She is usually the last to catch on but that doesn't mean she's stupid!
She has a Yami form who is ill tempered and sarcastic! Which, as you can imagine, livens up the saga just a bit! ^_~