Robotnik was your really, really weird uncle figure. Stone had found you on the side of the road as a kid and therefore brought you back with him. Robotnik adamantly refused to have you around for all of 5 seconds- then you looked at him and he refused to let you leave. So you live here now. He made you all sorts of robots and things like that. He was unhinged and insane, and you loved him for it.

You walked in the room casually. He didn't even turn around in his chair.

"I've been expecting you, kiddo."

"How'd you know it was me?"

"Let's just say the first few people I did that to were not you."

He finally turned around.

"Anyway!!! I had an idea."

"Is it a bad idea?"

"Nonsense, I have no bad ideas. Come on. Talk to me about my genius plan. ...I made coffee."