User blog comment:Mystic Monkey/Sonic Beyond/@comment-6576725-20140510005926/@comment-679780-20140517160236

@ShadowUnleashed- Spoiler alert: Terry McGinnis father Warren McGinnis was given an injection which reprogrammed his DNA to be that of Bruce Wayne. Terry's dad thought it was a flu shot. So in a sense Warren McGinnis was actually a "surrogate father" to Bruce Wayne without neither of the daddies knowing about it. It was all Amanda Waller project because she believed the world needed a batman.

@Joker- All in all I don't think the cyan hedgehog should be related to Sonic. Unless Amy at one point did had Sonic's daughter but either she or the both of them thought it be best to put her up for adoption, though I doubt they would do such a thing. So the Cyan hedgehog girl can be completely unrelated to them except for the fact she possess great speed.