NOTE: This story was originally made by Pixeltron128, but since the fanfic is deleted and forgotten and the author has been inactive since 2018, I will continue this story in respect of the fanfic crossover between MLP and LittleBigPlanet and the author.
After he stopped the evil plan of a greedy collector, saved the omniverse from a giant vacuum cleaner, wins go-kart races against hoarders and many other endless adventures, Sackboy goes to Equestria, via a wormhole, in the hope to found a magical artifact powerful enough to stop an evil television, named Lord Dark Screen, and his three robotic minions from destroying the cosmic Imagisphere and Equestria. During his walk in the Everfree Forest, he rescued a certain shy Pegasus from an ice-breathing dragon. Now, Sackboy is following her everywhere she goes, causing madness or harmony with his popit, the most powerful creation magic of the universe.
How long will Fluttershy hide her living brown knit creature from her friends? And will she help the little Sack to stop that evilish TV from destroying both worlds?
Will Sackboy found what he needs to save his home-world?
This is totally dumb?! Why would she keeps him a secret from her friends? When the fate of their world, his world, and the imagisphere is at hand!
I just hope Twilight scolds her for that later!