Cartoon Network's House of Checkerboard

House of Checkerboard, also known as Cartoon Network's House of Checkerboard, is an American/French upcoming crossover comedy action fantasy series, produced by Cartoon Network Studios, that is originally supposed to have 3 seasons. It will air in December 2018.

Names in other countries
French: Chambre de damier

Evil Gumballevil
When Dexter, host of the club try to play the cartoon, Apple is interrupting him, and calls Dexter an "dork", saying that he's only an classic character. Then Gumball comes here, and argues Dexter, if he will not act good, he will transform into his dark side.

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