The Creepy Creeper is a creepy guy who can walk very far by extending his legs and going 'Daaaaaaaaaaaaaaaaaaaadum'. He can walk over most obstacles, but can also walk up walls and on ceilings, walk in thin air, walk on clouds, bend reality and can eat a lot of food in one go by going 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaom' and expanding his mouth to extraordinary sizes to engulf people or even buildings in one gulp. He can step over anything and can make people forget that they ever saw him by releasing a cloud which follows them and surrounds their head, making them forget everything by going 'shhhhhhhhhhhhhhhhhhhhhhhhumf' He is a master at magic tricks and is sometimes hired for little kiddy parties in exchange for permission to eat all the children. He can pull playing cards out of nowhere and use them as weapons, much like The Trickster. Also, he never loses at any kind of game or sport, and he has read every book in existence even ones that are bad and rubbish. He can walk through things and he lives at the centre of the Earth, but owns a holiday home on Luna and a hideout atop Mount Olympus. To pass the time he sometimes goes cloud-ranching on Mount Everest. He also visits unfortunate non-believers whilst they sleep, and gives them nightmares about him eating them.
He says 'Sleeeeeeeeeeeeeeeeeeeep' and then uses his cloud on them so they forget he was ever there. A side-effect of this is that they have terrible nightmares for days afterwards. Very few people have the ability to imitate the creepy creeper's walk, and those who have this gift have flexible spines.
Also, like all Prowlers, if you try and take a picture of him it just ends up looking like a boxy green mess.