Say Uncle (Steven Universe)

"Say Uncle" is an episode of the American animated television series Steven Universe. The episode, written and storyboarded by Joe Johnston and Jeff Liu, is a non-canon crossover with Uncle Grandpa, another Cartoon Network series. While The A.V. Club described its announcement in February 2015 as "confusing", the episode aired on April 2 in that same year to high critical praise. The episode was watched by 1.926 million viewers.
Read article on Wikipedia