Everything that exists in Weirdworld² is 2D animated, and all voices are the 'real' voices of each character rather than their standard TTS voice. It is similar to Weirdworld in layout, but the islands that populate it are a light yellow, and the sky is a navy blue.
In On the Flipside, Spicy, Yessoan, and Crafty travel to Weirdworld² using Crafty's tennis ball. They discover the Reanimator on an island. After collecting it, they ask Zucchero, an animator stranded in Weirdworld², to aid them in returning to Weirdworld. He happily agrees to, as long as it progresses the plot. He claps his hands twice and the three are returned to Weirdworld.
Post-credits, Zucchero is seen stranded on an island, pondering how to free himself from the dimension.