Ben?

Ben? (Aka: Tested Dummy or Haunted Dummy) is a testing dummy who has no legs, it seems to have bloody hands and it holds a needle

Method of killing
Sewing into puppets

Containment Procedures
Standard cell, the cell must have a pool which is to be cleaned every month by Lance and a janitor, if Lance allows Ben to kill the janitor Lance is to be pinned onto the wall of Ben's containment cell for a day, if Sara attempts to save Lance she is to be pinned onto the wall and they both have to stay there for 3 days

Trivia
Ben? is based on Specimen 6

Ben? has a question mark at the end of it because it is not Ben but an unknown thing