VoldieMort

VoldieMort is the main antagonist of the series.

He usually in each movie does something evil or annoying that effects how the gang go about their mission, Voldiemort is allergic to cheese and once kidnapped Ron.

In the first film he was more good than evil by trying to trick hagrid into thinking he ordered the cheese pizza, in the second film he is shown as a more of a villian as

he kidnapped ron and try to kill the gang (presumably for the incident in the first movie)

It is not known if he has any companions at this point. He is also one of the few characters to be bald, and he is also a proper ninja. He has a sword.