Steven and the Kids Next Door

Steven and the Kids Next Door (a.k.a Steven and the KND) is a half-hour TV special featuring a crossover between Steven Universe and Codename: Kids Next Door animated by Rebecca Sugar.

Summary
After getting into trouble for the last time, Steven was grounded for a month. Until the KND to arrive him and addresses Steven as "Numbuh 48." As the Crystal Gems know that Steven was gone, they became so sad. Then, The Crystal Gems and the Kids Next Door realize that they have to work together to defeat Jasper, Father, and the Delightful Children from Down the Lane from taking over the Earth.

Main Characters

 * Steven Quartz Universe (voiced by Zach Callison) – The main character, the youngest gem member who's 11 years old (pilot), 12 (season 1) and 13 (season 1.2) of the Crystal Gems, and the only male on the team; his gem stone is a rose quartz that he inherited from his mother, Rose Quartz. His gem, embedded in his belly button, summons a shield which may also act as a projectile.
 * Garnet (voiced by Estelle) – A physically imposing, disciplined warrior, Garnet is the de facto leader of the group (in Rose's absence); her gemstone is a red garnet which is embedded into each of her hands. She is twice the height of Amethyst, and has dark, reddish-hued skin and a large black afro.
 * Amethyst (voiced by Michaela Dietz) – The impulsive and passionate "wild child" of the Gems; her gem stone is an amethyst which is embedded over her chest. She has violet-colored skin and pale purple, almost white hair to her ankles and she appears to have a slight cleft in her lip which makes her appear more catlike. Activating her gemstone summons a studded energy whip. Amethyst is very joyous and carefree, and despite being a magical entity who does not need to eat or sleep, she does so because she enjoys it. She loves to roughhouse with Steven and trade jokes. While the other two tend to support Steven in words, Amethyst often takes concrete action that ensures Steven's involvement.
 * Pearl (voiced by Deedee Magno Hall) – A precise and intellectual strategist, Pearl is the mental powerhouse of the Gems; her gemstone is a pearl which is embedded in her forehead. Activating her gemstone summons a teal-colored long-handled Glaive. She has pale skin and wears a blue and green tutu in keeping with her dainty, ballerina-like physique.
 * Numbuh 1/Nigel Uno
 * Numbuh 2/Hoagie P. Gilligan
 * Numbuh 3/Kuki (Beetles) Sanban
 * Numbuh 4/Wallabee "Wally" Beetles
 * Numbuh 5/Abigail "Abby" (Gilligan) Lincoln
 * Numbuh 362/Rachel T. McKenzie,
 * Lapis Lazuli
 * Numbuh 86/Fanny Fulbright

Villains

 * Jasper
 * The Delightful Children from Down the Lane (DCFDTL)
 * Father

Trivia

 * Steven Universe is revealed before he was a crystal gem, he was an Kids Next Door operative by the name "Numbuh 48."