Spinel has a pink complexion, magenta eyes, a small pointy nose, and dark cerise hair that is styled into messy pigtails. She also has three black lines underneath both of her eyes, an inversion of the eyelashes from her original form and reminiscent of running mascara. Her clothing consists of a plum-colored top, puffy pointed hot pink sleeves, puffy rose shorts, hot pink wrist-length gloves, white stockings, and a pair of rose knee-high pointy boots. Her gemstone is located in the center of her chest, cut in the shape of an upside-down heart with lots of facets and detail. Spinel initially had a goofy, fun-loving personality, but can sometimes be overbearing and an annoyance for others. Acting somewhat naive and oblivious of how others had perceived her, she was to be Pink Diamond's best friend to the point of being clingy and disingenuous to her real feelings. In stark contrast, upon being abandoned and later learning that Pink Diamond is gone with Steven taking her place and making new friends, Spinel is bitter and full of resentment towards everything connected with Pink Diamond. Due to her abandonment, Spinel is unhinged, prone to spontaneous laughter, and extreme outbursts when reminded even indirectly that Pink Diamond forgot her. This can be seen when her face contorts with fury after Steven asked Pearl who she was. Despite her anger and irrationality, Spinel is somewhat trusting, as she is willing to go along with Steven to stop her injector. That is until she sees the rejuvenator and believes he wanted to reset her. Fearful of being betrayed for a second time, Spinel immediately relapses into insanity and decides that she hates Steven, before launching a preemptive attack on him. Spinel was fueled by her vendetta and willing to eliminate anyone who gets in her way. This can be seen when she resets Pearl, Garnet, and Amethyst immediately after they just met, as she feels that they got between her and Pink. She may have had every intention of erasing Pink's "brand new friends" in a misplaced rage. She displays deeper emotions, like when she shows remorse after Steven saves her, and tearfully asks herself why she wants to hurt him and others. Spinel is also mature enough to understand she will have difficulty creating friendships after what Pink Diamond put her through, but she is willing to start over with the other Diamonds. Though silly and goofy in her original form, she is shown to be extremely intelligent and cunning in her altered state. Spinel possesses standard Gem abilities: bubbling, shapeshifting, fusion, regeneration, agelessness, gravity shifting, photokinesis, gem storage, and superhuman strength/durability. Scythe Proficiency: The non-summoned weapon Spinel wields is a Gem Rejuvenator that has the appearance of a scythe. Spinel was adept enough at wielding it that she was easily able to defeat three of the Crystal gems. Spinel is quite physically strong for a non-combatant Gem, she was able to fight with Steven, Garnet, Amethyst and Pearl at the same time even without her scythe, either by kicking, punching, pushing or restraining them. Later, she was strong enough to punch Steven from mid air to the Injector, almost destroying the Injector in the process. Spinel is decently durable, she was able to endure being launched forcefully to the Injector by the Crystal Gems. Spinel is able to bubble objects. Her bubbles are pink. Like most Gems, Spinel can store items on her Gem, as she summoned the Rejuvenator from her gemstone. Similarly to old-fashioned cartoons, Spinel is extremely elastic and malleable, able to stretch her limbs and torso to great lengths and inflate her body parts to strengthen her attacks. She uses this to increase the range of her attacks, able to reach enemies from a distance. She can also coil her extended limbs to form a spring with an inflated fist at the end. She even displayed the ability to become as flat as the ground and slither across it, in an almost semi-liquid like state. She's even able to coil one of her fingers into making a type of horn that activates and deactivates her injector. There appears to be no limit as to how far she can stretch and there also appears to be no limit as to how big she can inflate. Spinel also possesses physiology similar to rubber or putty. This allows her to jump great distances and bounce off surfaces. She has the ability to quickly dash in the style of a twister due to her elasticity properties. Spinning her legs like helicopter blades. She is shown to be able to run incredibly quickly. She can also Spin Dash

Steven has fair skin, curly dark brown hair, dark brown eyebrows, and full black irises which can sometimes have stars as pupils when he gets excited or optimistic. He wears a black T-shirt with a yellow star in the center with pink varsity jacket with white trims. He also wears cuffed blue jeans and salmon-pink flip-flop sandals. His gemstone, a pink diamond he inherited from his mother is where his navel should be. As he grows up, the heavy emotional toll of his mother's legacy and past conflicts catches up to him. He faces anxiety, deep-seated trauma, and feelings of insecurity, learning that it is okay not to be perfect and discovering what it means to just be human. He's selfless, musically inclined, optimistic and friendly, and compassionate and empathetic.