Gorm

This little guy is 2 dimensional ! It can travels from wall to wall, but can never be 3d. It can go from surface to surface as long as those surfaces touch each other ! It hates having to go on the ground because it fears it'll be walked on...

It can change size ! Be tiny as an ant to fit on a pencil, or big as a house to take all of a wall's place ! It can throw its hands away from him and have them come back.

Even though it cannot be a physical being, it can still interact with 3d objects depending on the circumstances. It can grab objects that are touching the ones it's currently on, for example a paper on a wall, and move it around ! It can even transform them into 2 dimensional objects like him, but it requires a lot of strength and becomes more difficult the bigger the object is

he often wanders aimlessly trying to figure out why he exist and what to do with his life, he's immortal and saw many of his friends die :( that's why he's scared of making new friends and may appear as very shy and introverted