Marc is Wilhelmina's little scheming, always hilarious, incredibly flamboyant assistant.  He normally is scheming with the recepionist, Amanda.  Marc is openly homosexual and dates photogropher Cliff in season 2.  However, they ended up breaking up after Marc cheated on Cliff.

Marc St. James Quotes

Marc: Complimentary mimosas!
Betty: Really?
Marc: No, but if you get the filing right, I won't beat you with a bag of oranges.

Uck. Christina must have a doughnut in her pocket

Marc

Ugly Betty Quotes

Normally I don't like, or notice old people, but that was interesting

Marc [about Claire and Victoria]

You're not the other woman you're the only woman.

"Coach" Tony