Alanna Noel Ubach (born October 3, 1975) is an American actress and voice artist known for her roles in Coco as Mama Imelda, Legally Blonde as Serena McGuire and Meet the Fockers as Isabel Villalobos.

She has provided voices for several characters in a number of animated television shows and movies, such as Liz Allan on The Spectacular Spider-Man, the title character on El Tigre: The Adventures of Manny Rivera, Lola Boa on Brandy & Mr. Whiskers, Strudel on Pound Puppies and four characters in the Oscar-winning animated film Rango. She played the first female assistant, Josie, on Beakman's World.

Ubach was born in Downey, California, the daughter of Sidna and Rodolfo Ubach.[2][better source needed] Her father was from San Juan, Puerto Rico and her mother, raised in Los Angeles, was from Sinaloa, Mexico.[3]

In 1994, she received a positive review from The New York Times for her role as a Jewish girl in Kindertransport at the Manhattan Theatre Club.[4] During this stage, she also landed a regular spot as Josie the assistant in the TV series, Beakman's World. Her early film roles include Airborne (1993), Sister Act 2: Back in the Habit (1993), Renaissance Man (1994) and The Brady Bunch Movie (1995). She later had roles in a series of indie films: Denise Calls Up (1995), in which she played the title character; Johns (1996), playing David Arquette's girlfriend and in Freeway (1996), with Reese Witherspoon and Kiefer Sutherland, playing a Latina gang girl. She also played roles in more mainstream films like Clockwatchers (1997) and alongside Reese Witherspoon in the two Legally Blonde films.[5]