TV Guide Nickelodeon Monday

SpongeBob and Squidward are sent to collect unpaid bills in 'Bubble Bass's Tab', then in 'Kooky Cooks', Spongebob and Squidward cook a fancy meal for Mrs. Puff, but every dish becomes a dispute

The wise-cracking blue hedgehog, made famous by a series of popular video games on Sega consoles, continues his computer-animated adventures through the Shatterverse. At the end of the first series, the eponymous spiny mammal (voiced by Deven Mack) learnt from black hedgehog Shadow (Ian Hanlin) that the original version of Green Hill no longer exists. Sonic is trapped in a multiverse of mayhem with different iterations of his friends Amy Rose (Shannon Chan-Kent), Knuckles (Adam Nurada), Rouge (Kazumi Evans) and Tails (Ashleigh Ball). Sonic and Shadow must put aside their differences and work together to repair the temporal damage and outwit diabolical scientist Dr Eggman (Brian Drummond)

The heroes in a half shell come to terms with their new roles as saviours of New York City in an animated series set shortly after the events chronicled in the film Teenage Mutant Ninja Turtles: Mutant Mayhem. Donatello (voiced by Micah Abbey), Leonardo (Nicolas Cantu), Michelangelo (Shamon Brown Jr) and Raphael (Brady Noon) experience the usual growing pains of teenagers while contending with the media spotlight. Building on their friendship with aspiring reporter April O'Neil (Ayo Edebiri), the reptilian quartet face brilliant inventor Bishop (Alanna Ubach), who believes mutants are the greatest danger facing humankind and must be eliminated. Meanwhile, pampered rich kid Rod (Pete Davison) yearns to be a mutant and leverages his wealth and connections to achieve a dangerous dream

The gang visit a contamination zone and discover an amazing substance. They think it has incredible potential and want to see if it can unlock a doorway to the other side. (S3, ep 10)