I guess so, I just can't stand the Clark-Lois-Superman drama thing with Sonic's having an alter ego.
I guess so. but not even Nicky knew he was Sonic.
Nicky became Sonic when he was stressed out over feeling incompetent. Then he transforms into Sonic to save the day. He would then disappear when Nicky conveniently shows up and Nicky genuinely doesn't recall being Sonic at all.