Now, in the latest development, Sonic fans have become fixated with a pink-haired human-like character that was shown in during the first episode of TailsTube yesterday. And some even seem to think it's got something to do with the upcoming game.
Apart from Ian Flynn who responded with the hashtag "knowing smile", it's got to the stage now where even the creative director of Sonic the Hedgehog, Kazuyuki Hoshino, has responded to fan art of the character.
You can see this mystery character shown during the first episode of TailsTube at around the 2-minute mark:
What do you make of all of this? Do you think Sega just teased a new character for Sonic Frontiers? Or is it for something else? Share your own thoughts and theories down below.