Steven is relatively short with a thick build. He has curly brown hair and black pupils. He wears a red T-shirt with a gold star on the front. He also wears blue jeans and red sandals. His crystal gem, a rose quartz which used to belong to his mother, is on his stomach where his bellybutton should be. His weapon is a shield.
Steven has a fun and musical personality; he likes to sing and play on his ukulele. He enjoys adventures and wants to save the world with his fellow Crystal Gems, Garnet, Amethyst, and Pearl, even though he doesn't have control over his gem yet. He looks up to them like sisters and takes their advice to heart.