Which Dimension?
Dimension is when you travel through space. It is impossible to travel through dimensions. Like, create a character goes in to the 2D world. Look in the mirror you see the Mirrored world. Create a creature too birazze for the 2D world, it goes in Fairy Land. Just keep in mind that universe is different from dimensions. Dimensions are bigger.
Some people hate their life and relie on cartoons too much. Which dimension will the people like you more. The first paragraph have the possible dimensions.