Rebecca "Bex" Mack is a character in the Disney Channel television show Andi Mack. She is portrayed by Lilan Bowden.

Bex is the free-spirited daughter of the Mack family. After a long absence, she returns home on her younger sister Andi's 13th birthday to get her life back in order.

She later reveals to Andi that she is not her sister, but her mother.


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Andi Mack
Andi MackCyrus GoodmanBuffy DriscollJonah BeckBex MackCelia MackHam MackAmber
Season One: "13" • "Outside the Box" • "Shhh!" • "Dancing in the Dark" • "It's Not About You" • "She Said, She Said" • "Dad Influence" • "Terms of Embarrassment" • "She's Turning Into You" • "Home Away from Home" • "Were We Ever?" • "Best Surprise Ever"

Season Two: "Hey, Who Wants Pizza?" • "Chinese New Year" • "Friends Like These" • "Mama" • "The Snorpion" • "I Wanna Hold Your Wristband"