airing schedule. In an October 2020 art book for the series, Sugar stated that when clips from unaired episodes, giving away major spoilers, were leaked or those clips were used in official promotional videos, it was "very demoralizing for the crew."
From June 2 to July 29, 2018, Steven Universe aired re-runs on Cartoon Network's sister channel, Boomerang.
Episodes
Main article: List of Steven Universe episodes
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Crossovers
"Say Uncle" is a crossover episode with Uncle Grandpa that aired on April 2, 2015. In the episode, Uncle Grandpa helps Steven use his Gem powers when he cannot summon his shield. The episode contains an acknowledgement by Uncle Grandpa that the episode is not canonical. Steven, Garnet, Amethyst, Pearl and other Cartoon Network characters from current and former shows made cameo appearances in the Uncle Grandpa episode "Pizza Eve".
Additionally, Garnet appeared in "Crossover Nexus", an episode of OK K.O.! Let's Be Heroes, which aired on October 8, 2018. In the episode, Garnet teamed up with K.O., Ben Tennyson from Ben 10 and Raven from Teen Titans Go! to stop the villain Strike.
Minisodes
Main article: List of Steven Universe episodes § Shorts
Two volumes of mini-episodes have been released by Cartoon Network. The first one includes the extended title theme "We Are the Crystal Gems"; shorts in which the Crystal Gems teach Steven about Gems in a classroom setting; an unboxing video of Steven's new duffel bag; and a short in which Steven's pet lion is playing with a cardboard box. The second volume contains fives minisodes that show Steven cooking, performing karaoke, reacting to "Crying Breakfast Friends!", video chatting with Lapis and Peridot, and playing a new song.
Cancellation and sequels
