1. A malcontent, argumentive, or maladjusted user of a forum or website bent on trying to be superior by normally participating in debates with straw-man arguments or quote whoring.
2. An individual whom normally engages in encroaching behavior that cause constroversay or dischord.
3. A misbehaving elitist who has a habit of getting banned from multiple sites or forums for outlandish reasons(Normally, in a playful pretext).
"Oh, another Mobius," or
Member: "Someone is deleting our topics/causing mischief/harassing our members, in board."
Administrator: "I am going to ban the Mobius."