Steven Universe: We Need to Talk Season 2, Ep 12
Greg tells Steven and Connie how he learned about Gem fusion.
Steven Universe: The Message Season 1, Ep 46
Greg helps the Crystal Gems decode an enigmatic signal from an ancient Gem artifact.
Steven Universe: Maximum Capacity Season 1, Ep 43
Greg and Amethyst end up binge-watching their favorite old sitcom Li'l Butler instead of cleaning out Greg's storage locker.
Steven Universe: House Guest Season 1, Ep 27
Greg unintentionally interferes with Steven's powers while laid up at the temple with a broken leg.