"I miss them so much!"-Tails
this scene takes place in the games or comics universes.
I usually don't try to make sad stuff, but this idea would leave me alone. The idea come from the fact that Tails and Sonic consider themselves brothers. Before you tell me that they aren't dead in the comics i know that, but he didn't until around issue 125. Having said that at some point in either universe Sonic would have had to comfort his friend over the fact that his parents died.