TV Guide Nickelodeon Thursday

Baby Smurf travels through time in 'Smurfily Gmurfy', and in 'Smurf T for Thief', someone has stolen the Blue Moon festival cake, and to find the culprit, Chef has to lead an investigation

Eleanor enters a knight competition in 'A Knight's Tail', and then in 'The Lifeguard', Alvin and Eleanor train to be lifeguards. Theodore flunks, but saves the day. Oops, spoiler alert. (S5, ep 22)

DoodleBob bites SpongeBob, transforming him into a WereDoodle in 'Curse of the WereDoodle', then in 'Gorilla Suit Day', SpongeBob dresses up for the day and is mistaken for a real gorilla. (S16, ep 2)

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)

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)

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)