Albertina Marie Majorino is an American film and television actress. She started her career as a child actor, starring in films such as Andre, When a Man Loves a Woman, Waterworld, and Corrina, Corrina. After her early success as a child actor, she returned to acting at age 18 as the character Deb in the 2004 film Napoleon Dynamite. From 2004 to 2007, she portrayed Cindy "Mac" Mackenzie on Veronica Mars, and reprised the character in the 2014 spinoff film; she was offered the chance to play the character once again in the eight-episode fourth season in 2019, but turned it down. She has also appeared in the TV series Big Love, True Blood and Grey's Anatomy. She has played the part of Maggie Harris on the television series Legends. She later appeared in the recurring role of Florence in the television series Scorpion.