TV Guide Nickelodeon Monday

Mr. Krabs finds pets are profitable in 'A Place for Pets', then in 'Lockdown for Love', Plankton ruins another date with Karen, so she puts the Chum Bucket on lockdown until he proves his affection.

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)

Plankton and Karen take dance lessons and become top of the class in 'Tango Tangle', then in 'Necro-Nom-Nom-Nom-I-Con', SpongeBob cooks up chaos in the kitchen with a magical spell book.

The Stars celebrate Patrick's birthday at the Chum Bucket in 'The Fun Bucket', then in 'The Patrick Show After Dark', Patrick and Squidina explore Bikini Bottom late at night. (S3, ep 1)

Karen tells the fairytale of a nerd trying to steal an action figure in 'Big Bad Bubble Bass', then in 'Sea-Man Sponge Haters Club', Squidward hosts a secret We Hate SpongeBob Club at his house.

SpongeBob and Squidward try to sell krabby patties from a truck in the depths of the ocean in 'Food PBBFT! Truck', then in 'Upturn Girls', Pearl and Narlene have a whales' day out in the big city

At the end of the second series of the computer-animated adventures of the wise-cracking blue hedgehog, Tails' doppelganger Nine (voiced by Ashleigh Ball) stole the Prism Shards to create a new reality, consigning Sonic (voiced by Deven Mack) and Shadow (Ian Hanlin) to a grim fate. Spiny mammals rally in these eight action-packed episodes, which force former enemies to forge alliances and restore stability to a mouldering Shatterverse. If Sonic is going to restore his reality in Green Hill, he will need to place his trust in friends Amy Rose (Shannon Chan-Kent), Knuckles (Adam Nurada) and Rouge (Kazumi Evans) as well as scientist Dr Eggman (Brian Drummond)

Mr. Krabs has an accident and leaves SpongeBob in charge in 'Boss for a Day', then in 'The Goofy Newbie', Patrick takes a job at the Goofy Goober when he finds out the employees get free ice cream.

SpongeBob watches Mr. Krabs's house while he's away in 'Knock Knock, Who's There?', then in 'Pat Hearts Squid', Squidward is forced to room with Patrick, and Patrick begins to take after him

After getting rid of Ouchie, Pinkeye takes over the Star house in 'Get Ouch', and in 'Day of the Living Dad Jokes', Patrick and Squidina must find safety amidst the dad joke apocalypse. (S3, ep 12)

An old friend Shoot comes back to town in 'Shoot', then in 'Rock's First Day of Work', Rock starts his job as Franz Roll's assistant and learns just how demanding his role model truly is. (S2, ep 3)

SpongeBob befriends a talking Krabby Patty whose only wish is to be eaten in 'My Friend Patty', then in 'Fun-Believable', Rube explores little known oddities and attractions around Bikini Bottom.