I've never seen or played anything in the Gundam Wing series. Is Wufei a character throughout the entire series or only in one installment? Looking over the people involved in producing Gundam Wing ( www.imdb.com/find ) and those involved in producing Xenogears ( www.imdb.com/title/tt0238738/ ) and Xenosaga ( www.imdb.com/title/tt0364126/ ), it doesn't really look like there's any crossover. It seems like any perceived connection could probably be chalked up to coincidence, though as I said, I'm not familiar with the Gundam Wing series, so there may be more of a connection than I'm aware of.