Although she had been mentioned by Karen since the pilot episode, Rosario's first appearance was in the season 1 finale.
PHOTOS: 2013's biggest splits Stan, 30, guest-starred on the popular ABC fantasy series as the Mad Hatter and last appeared on the show in October 2012 in Season 2.
This gave him the opportunity to spend a year abroad studying acting at Shakespeare's Globe Theatre in London, England. His feature film debut was in Renny Harlin's Lost Boys-esque 2006 supernatural thriller The Covenant.
While earning his Bachelor in Arts, he worked on a few independent films and landed a prime television role in the 2003 season finale of Law & Order in a plotline based on the real life Washington, D. In 2007, Sebastian guest starred as habitual liar Carter Baizen on The CW's young adult drama Gossip Girl.
Karen Walker's put-upon but faithful maid portrayed by actress Shelley Morrison.
In 1985, Rosario met Karen Walker at a club, while working as a cigarette lady, and went to work for her as a maid, which was where she was working when the series began in 1998.