The epitome of dick. One who plays Neopets and acts like he rules the world because he has some super expensive item that he obtained unfairly. He has a posse of girls, most of whom became his friend AFTER he obtained this rare item (most of whom are also ugly/bitches). If you ever come across a Marquardt or Monophyte on Neopets, well...let's just say that you should run far, far away. He will only make you do degrading things. Don't give him the attention he so desires.
Marquardt: No example can adequately convey how much of an ugly dick this kind of person really is.
All you have to do is read the last name to understand that he is a smelly fart.