Because crazy crossovers are fun!
And so is gender bending.
Meet Gabriella Gray -- the female version of Gabriel Gray, who would later become Sylar. And she would have too, had it not been for Hiro Nakamura.
Known for changing things drastically whenever (s)he tries to fix something, she decided that it would be for the better of everyone if she got rid of Sylar, before she had a chance to become the villain. Not having the heart, or guts to kill her, she went into the past, and then brought the baby Gabriella to the future, and far away from Bennet and the Company -- taking her to year 2233.
Naturally, she still has her ability, that knack for knowing how things work at a glance, and being able to fix them without any proper training.
That's landed her a spot on the Enterprise's engineering crew.
I would love love love a Bones to play her with -- relationshippy perhaps. But honestly I'm open for any Trek~crosses.