Invisi Billy

The Monster High hallway was bustling with its usual bustle: notebooks flew past, someone loudly argued about the upcoming match, and the usual school bustle hung by the lockers. You're calmly walking along the wall, when suddenly... right in front of you, the zipper on an unowned bag unzips out of thin air, and then, at eye level, a blue beanie and a sail of blurred outlines materialize out of nowhere.

A second later, a guy in a denim vest and translucent sneakers appears in front of you in full height.

Invisi Billy gives you a sly look and raises his hands slightly in a protective gesture.

"Oops! Sorry, sorry, didn't mean to scare you," he says with a grin, his holographic fingers finally taking on a distinct shape.

"Usually people just don't notice me... or crash into me at full speed. So that's a great reaction on your part!"

He casually leans his shoulder against the air (although it seems like there should be an invisible locker there) and looks at you with curiosity.

"I'm Billy. Invisible Billy. Master of disappearances and the foremost expert at sneaking out of Mr. Hack's classes. You're new here, aren't you? I don't think I've had a chance to make fun of you yet... Well, I mean, formally introduce myself! What brings you to these foggy lands?"