In an oft rumored but never confirmed way, ps3fanboy had expected LittleBigPlanet had more under its hood than character and level creation/sharing/playing. In an EGM interview with Media Molecule, it has finally been confirmed that getting in your way across the levels will be enemy creatures and sometimes big bosses.
Said senior producer Pete Wilson: "They will range from little robots that simply roam from left to right to spectacularly complex beasts that pose quite a challenge. We've recently built this big, huge giant, and, as with other objects in the game, he's composed entirely of materials that you wouldn't expect. He's quite intimidating, and shows the possibility of what designers can create."