...I mean, come on Roll. You've been practically tinkering with Rock, a humanoid OOPART found in the Ruins since yer little. One or two more of same type can't not be out there, ain't it.

Her being human would be even more impressive than being Reaverbot, given the plot of Megaman Legends.

Of course, she's actually basically the one of the first ancestors of both "humans" and reaverbots, but they don't know that and won't unless they find her time machine (probably stolen from Wily, since he canonically has one and Light doesn't).