Golden

Fifth year Anna Marlene Potter isn't like her twin brother. She doesn't have a special destiny. She's not particularly good at quidditch. She doesn't have an accepting group of friends. and she is quite proficient at potions.

in fact, if not for the bright green eyes and matching last name, most wouldn't assume they were related at all.

After all, how could Gryffindor's golden boy be related to a Slytherin?