He is the son of human musician Greg Universe and Rose Quartz (who was secretly Pink Diamond, one of the alien rulers of the Gem Empire). He is the only known human-Gem hybrid, inheriting a pink gemstone embedded in his belly button instead of a standard human navel. He lives in Beach City and is raised by and fights alongside the Crystal Gems—Garnet, Amethyst, and Pearl. He lives in a temple with them. Rather than relying purely on violence, Steven's primary strengths are empathy, emotional healing, a magical protective shield, and the ability to resolve intergalactic conflicts through dialogue and compassion. just like his mother. a kind, optimistic, and empathetic boy who is the first-ever half-human, half-Gem hybrid. Steven is relatively short and stands at about 5'6" (1.68 m) with a stocky build. He has fair skin and a pink diamond embedded right where his navel should be. He has curly dark brown hair, dark brown eyebrows, and dark brown or black eyes that sometimes turn into glowing stars when he is excited. A salmon-pink or red T-shirt with a yellow star in the center, cuffed blue jeans, and salmon-pink flip-flop sandals.

A core member of the Crystal Gems, an alien warrior, and a former close confidant to Rose Quartz (Pink Diamond). She has strong feelings for Pink diamond/rose quartz. A slender, very tall alien "Gem" with an ivory complexion and a smooth, un-faceted gemstone embedded directly in the middle of her forehead. Light peach-to-pink hair styled in a pixie cut that points out in the back. She is a brilliant tactician, engineer, and swordsman who rebelled against the Gem Homeworld to help save Earth. She was originally the personal servant/pearl of Pink Diamond (who later assumed the form and identity of Rose Quartz)

She is a permanent fusion of two separate Gems—Ruby and Sapphire—who chose to stay fused out of romantic love. She acts as the wise, strong, and level-headed mentor and mediator for the group. She has superhuman strength, heat and electro-resistance, and Future Vision (the ability to see multiple potential future outcomes), which she channels through her third eye. Her primary weapons are massive, glowing gauntlets. She has dark-purple or black hair styled into a distinct cube-shaped afro, magenta/red skin, and stands 7'3" tall. She has three eyes (blue on the left, purple in the middle, and red on the right). She almost always wears futuristic, tinted visors (shades) that cover her eyes. Her outfit changes slightly ("regenerates") across seasons, typically featuring a patterned athletic bodysuit with shoulder pads and elbow-length gloves. Her two gems are embedded in the palms of her hands (a ruby on one hand and a sapphire on the other). She is a gem warrior.

She is a Quartz Gem (Facet-5 Cut-8XM) and the last Gem manufactured on Earth in the Prime Kindergarten. She is fun-loving, carefree, and chaotic, often acting like an older sister figure to Steven Universe. she is a gem warrior. Because she stayed underground in her hole for 500 extra years before emerging, she ended up smaller and stockier than a standard Quartz soldier (like Jasper). A major part of her journey is overcoming deep-seated self-doubt and feelings of inadequacy about her size and origin. She summons a magical purple whip, can perform a speedy "spin dash", and is a master of shapeshifting. Thick, messy, pale lavender hair that reaches her ankles, usually with a large bang covering her left eye. An amethyst quartz gem located right on her chest. Like other Gems, Amethyst can "reform" and change her outfit when her physical form is damaged.• she wears a black mock-neck top torn open at the chest to show her gemstone, medium-gray shorts with black stars, and white boots