Margaret

Margaret is a female robin who works as a waitress in the coffee shop, across the street from the park. She's one of the few animal characters on the show that wears clothing. Mordecai has a major crush on her, and is always finding ways to make excuses to go to the coffee shop to see her. Margaret is voiced by Janie Haddad.

Appearance
Margaret seems to have a very similar appearance to Mordecai, however, she is red (rather than blue) and has a more curved beak and more curved "hairstyle". Unlike Mordecai, she doesn't have any stripes at all on her tail feathers, arms, or fingers. She's slightly shorter than Mordecai but has a very nice figure.

Cartoon Network Character Page Description
"This red-breasted robin works as a waitress at the coffee shop across the street from the park. Mordecai has a huge crush on her and is always finding excuses to take coffee breaks when she's working."

Mordecai
Margaret cares for Mordecai and at times stands up for him (ex. In Caffeinated Concert Tickets when Slasher insulted Mordecai she told Slasher, ("Don't be such a jerk"). Much to Mordecai's chagrin, Margaret seems totally oblivious to Mordecai's feelings for her. In Do Me A Solid, Mordecai made her laugh however, minutes later, Mordecai spat in her face (from eating a super spicy burrito), and she seemed a little upset proclaiming, "Its okay. I don't even like this top." Later in the same episode when they went to the movies, Mordecai asked her for five bucks for popcorn and she seemed a little annoyed by this. When they arrived at the house later, Rigby requested Mordecai to do a very embarrassing soild that he denied to do; however, when chaos ensues, Margaret tells Mordecai that she does solids for Eileen all the time and the only reason she went on the double date was because she was doing a solid for Eileen so Eileen can be with Rigby. In this case, Margaret has no sign of love for Mordecai but as seen in Mordecai and the Rigbys the future Mordecai refuses to admit whether or not he dates Margaret in the future yet she has several other boyfriends like Slasher and Angel (Mordecai and the Rigbys). Although she has many boyfriends, it seems that she breaks up with with one of them in each episode she appears.

Rigby
Margaret considers Rigby funny (It's Time) and in that same episode, she almost went on a date with him. She probably thought after the episode Do Me A Solid he was a real jerk considering Mordecai said that Rigby was forcing him to do the solid.

Eileen
Apparently, Margaret and Eileen are best friends the way Mordecai and Rigby are, but little is known about their relationship. It is clear that she is close to Eileen and does solids for her all the time, as seen in Do Me A Solid. She hopes for Eileen and Rigby to become closer.

Trivia

 * In Camping Can Be Cool, Margaret mentions that she attends a college in City and also plans to quit her job at the Coffee Shop as soon as she graduates.
 * Earlier in the same episode, she also mentions that she hasn't had a boyfriend for a while. The last time she has had a boyfriend was in Mordecai and the Rigbys
 * Despite being described as a robin, Margaret has red plummage, which is odd since only male robins carry any red feathers in reality.
 * Cartoon Network's character page describes Margaret as being "red-breasted" when she is clearly white-breasted
 * Margaret's car strongly resembles a 1982-1985 Honda Accord hatchback.