Some people stay the same in the midst of the apocalypse, while others change dramatically. Andrea is part of the latter group. Before the outbreak, Andrea is a civil rights attorney trying to reconnect with Amy, her younger sister. The world turns upside down as the women return from a road trip.
Andrea is introduced as part of the rooftop group in Season 1's "Guts". She and Amy grow close to Dale, but when a zombie attack leaves Amy with a bite, Andrea pulls back from the people around her. When the group escapes the CDC, Andrea wants to stay behind and call it quits, only relenting when Dale convinces her to go on living.
Throughout Season 2, Andrea becomes a great shot and a hardened survivor. After Hershel's farm falls, Andrea and Michonne spend the winter together before stumbling upon Woodbury. The Governor falls for Andrea right away, and she reciprocates his feelings ... until she realizes what an unhinged madman he really is. She tries to sneak away from Woodbury, but the Governor tracks her down and brings her to his secret torture room. There, he kills Milton, who helped Andrea escape, and leaves the corpse to turn and eat Andrea. The survivors come to her rescue in the Season 3 finale "Welcome to the Tombs," but not before she's been bitten. Andrea borrows Rick's gun to end things on her own terms.