User blog comment:Damac1214/Black Ops II Zombies Reveal Released/@comment-201.53.143.162-20120926201132

i think that the new wonder weapon is a chainsaw.treyarch had a file in bo 1 named sabertooth in which the weapon itself was invisible but it did chainsaw movements and noise

http://www.youtube.com/watch?v=Q4oenCJd9_k