I'll take it as a CS is necessary
Name: Jeff the Killer
Age: 17 (I believe)
Appearance and Bio: copy and paste the link http://creepypasta.wikia.com/wiki/Jeff_the_Killer
Abilities: He is inhumanly powerful when going for a kill
Weapons: a kitchen knife
Weakness: Even though he is powerful, he is still mortal and has weaknesses of a normal mortal. He absolutely loves the chase when attacking his victims, which sometimes allows them to escape.
Other: He's a crazy psychotic serial killer of course. He is awaiting the day Jane comes in an attempt to kill him.
Much shorter than most of my CS's because bio and appearance were taken care of by a link, also I know how Jeff acts but not too much personal info.