Bonesaw's been waiting a while for an opportunity like this, and nothing will stop them from taking hold of it- not even the possible downsides of manipulation of the Space-Time continuum and possible universal collapse. My entry for @artmemes Voting Signups.
Bone saw, based off of (obviously) Bone saws that Medical Personnel use in surgery to cut bones, in order to make sure that said surgery is successful. I based Bonesaw off of that, as well as the Medic's (Team Fortress 2) past (Losing their medical license.) Bonesaw tends to work alone, having difficulty with working with others due to their self-centeredness, (sort of) God-Complex, and their work having been alone (before losing their license.) They'll do anything to win a challenge, murder included- Teammates or not. Accessories are optional if Bone saw is selected.