Margo (Earth-1: Pre-Crisis)

Margo was a friend of Thea Queen.

Friendship with Thea Queen
Due to them attending the same high school, Margo became friends with Thea Queen and Roxy. In 2012, Margo obtained some pills from Roxy and subsequently visited Thea at Queen Mansion. As she was crushing them up, she was interrupted by Oliver Queen entering Thea's bedroom, causing her to quickly hide the evidence. She then left after telling Thea that she would see her at school.

The next night, Margo attended Oliver's homecoming party, where she observed Thea buying a packet of drugs called Fun Dip. As they were preparing to leave, Margo asked Thea where the drugs were, and she responded that she must have dropped them. Some time later, Margo and Thea planned to go to the mall after school, but they couldn't as Thea had been grounded by her mother.