Spinel is a vengeful gem whom was emotionally neglected and abandoned by her former owner,
Pink Diamond. They were both joyful playmates who would entertain each other every day, week, and even months with various games and juggling. Pink Diamond got weary, sick of
Spinel's clingy personality. So she decided to raise Spinel's hopes by tricking her into standing still 6,000 years. Nefariously tricking her into thinking it's a game, and then abandoned her carelessly without any
second thoughts. One day, Spinel received a
hologram report. Of the 16 year old Steven Universe, talking about his personal life and his known friends. Having no awareness that Spinel was watching it. It shocked Spinel so horribly as once the broadcast has ended, where it made her stop her frozen stance. It pushed her to the brink of insanity, so she gained a new, more pessimistic form. The one we know with the mascara cheek lines and the unorganized piggy-tails. That was when she wanted revenge.