Andy DeMayo is the cousin of Greg Universe
and the first cousin of Steven Universe once removed in the cartoon Steven Universe. He is initially hostile to the Gems, but grows to accept them into his family.

In Steven Universe, Buck Dewey is a resident of Beach City and the son of Mayor Bill Dewey. He has a laid back personality and is open-minded, although he does dislike “nasty stuff”.

Amethyst is able to shapeshift into a purple Abominable Snowman-like creature known as the Purple Puma, who’s her wrestling alter ego. She uses wrestling as an outlet to blow off steam, especially when Pearl and Garnet get on her case.

Greg Universe is the father of Steven Universe, from a relationship with Rose Quartz, and owner of a small car wash. He was once somewhat important to the Crystal Gems, but today he is no longer need. Quite sad if I do say so myself.

In Steven Universe, Sardonyx is the fusion of Pearl and Garnet (and by extension, Ruby and Sapphire). Sardonyx towers in size, she’s so tall that her hands are actually taller than Steven. She has vermillion skin and pale peach/apricot-colored hair, styled into a tetrahedron with very rounded corners. Her torso and legs greatly resemble Garnet’s, but have less mass. As a fusion, she has four arms and inherits the same locations of her gemstones as her fused cooperators.

Steven is part of the Crystal Gems, an intergalactic group of warriors who protect the Earth from evil. Though he’s half human, he has unique powers that he develops with the help of Garnet, Amethyst, and Pearl. His powers come from the gemstone, which is located where his belly button should be, that he inherited from his mother Rose Quartz.