Black Cat & Star SapphirevsGreen Goblin & Sinestro

Black Cat & Star Sapphire 'cause 'Sinestro Goblin' is non-canon, as is 'Black Star.'

Black Cat & Star Sapphire He's not officially recognized or published. So he's non-canon.

Black Cat & Star Sapphire 'Upcoming,' means he still isn't published or anything to be make him publicly recognized or canon. He's a character you created, not in any sort of canon media yet, so he's non-canon.

Black Cat & Star Sapphire Still non-canon. Green Goblin and Sinestro exist but Sinestro Goblin doesn't in anything other than your ideas, so he's non-canon. Not gonna try and explain it to you any more.