I have been experimenting a bit with Grotesques, which need a character pushing them around. A Haemonculus is the cheapest way of achieving a character dedicated for them. I made another character model based on a Mandrake figure and gave him equipment so I could use him as Dracon or a Haemonculus. The Necron Flayed one claw had works really nice as a Haemonculuc Scissorhand or Dracon Agonizer.