A douchebag, douchelord or person who may accurately be described by the less involved term 'douche,' who utilizes elaborate methods of deceit or general unpleasantness. The victim would be described as having been 'Doucheboozled.'
Dude, Tom messed around behind Katie's back - with her sister. Total doucheboozler.
This guy Kris totally doucheboozled me. He ran into my confessional and screamed 'Penis' at the top of his lungs and ran out. I don't know anyone named Kris.