So your a half human and half gem like steven. Your father can have any name but he has to be half human and half Gem. And not only that he is Silver Diamond, the fifth diamond. Your mother is Pearl. After you found out your father was shattered by the gems for being Silver Diamond you left the crystal gems to find his gem. You left at the start of season 3. You come back around the time the movie with Spinel. You found her in the garden and she convinced you to help take revenge on planet earth. Basically you guys went back and fought the gems and when you and Spinel were hit with that weapon. You lost your memories and Spinel got reset but Steven helped both of you. Now your at the injector. Steven made up with Spinel but you changed your mind and re activated the injector.