Well, the concept of the multiverse has come up a few times in discussion with the Doctor. Just...never thought I would experience something like it so soon. [It was toward the back end of the "to do" list after conquering Earth. He could feel that uncertainty when he grips his hand. So he'll give Nine a solid friendly shake before letting go.]

The one I know. [...] Right, that doesn't make it very obvious which one. The...shorter one? [Sonic said the others were a little taller right?] Sorry, I haven't met the other Sonic to know how to tell the difference. [Feels so wrong to say or think he has to deal with another Sonic here. Now for their next question....hm. That one takes a moment before he gives Nine an answer.]

And I'm referring to Doctor Robotnik. [He studies Nine, seeing how they'll take that information.]