The kind that likes manipulating people and will do horrible things for no other reason than 'because I can'. In his canon he also produced and distributed a miracle cure-all that had a side effect of turning people into monsters.

You know, the usual 'wants to create a brainlessly loyal army to take over the world' type. Except he's kind of limited in what he can do because he's no longer the head of a government, so he's just getting his kicks right now by finding people and seeing how far he can push them before they snap at him or, alternatively, picking out people that have the potential to be used as pawns.