  This paper gives an overview of impersonation bots that generate output in
one, or possibly, multiple modalities. We also discuss rapidly advancing areas
of machine learning and artificial intelligence that could lead to
frighteningly powerful new multi-modal social bots. Our main conclusion is that
most commonly known bots are one dimensional (i.e., chatterbot), and far from
deceiving serious interrogators. However, using recent advances in machine
learning, it is possible to unleash incredibly powerful, human-like armies of
social bots, in potentially well coordinated campaigns of deception and
influence.
