An account on the social media site Twitter that has no profile picture or tweets. This person sometimes even protects or locks their "tweets" even though they have none to begin with. Then they go around creepily following random people or pick out certain people to follow that catch their eye for who knows what reason. When a person checks their followers and sees a twitter creeper following them, it usually gives them a very uneasy feeling considering the fact that they just don't know who is behind that account. They could be a dangerous stalker or a harmless spammer, either way you just don't know. The best thing to do when a twitter creeper follows you is to block them to put your mind at ease.
"Oh look, another twitter creeper is following me. No tweets, no profile picture, and their account is protected. But yet they are following 200 people. I'm sure no one's creeped out by that."