*Puts on my rareship classes* Amy, Shadow... I raise you another hypothesis : Princess Blaze. After all they didn't fight each other in canon games, and they both are relatively introverted individuals with few 'social skills' and a cold class
Well I can say right now that Blaze isn't gonna be in the comic, the main characters have already been listed. But it's probably a good thing she isn't going to show up because I don't think all the readers are ready for my rareships just yet