who designed her?
Jennifer Lee and Chris Buck
Anna (Frozen)
Created by co-directors Jennifer Lee and Chris Buck, 
who does the voice for anna in frozen Kristen Bell
wiki:18716991
Anna (Frozen) [SEP] Introduction
Anna of Arendelle () is a fictional character who appears in Walt Disney Animation Studios' 53rd animated film "Frozen" and its sequel "Frozen II". She is voiced by Kristen Bell as an adult. At the beginning of the film, Livvy Stubenrauch and Katie Lopez provide her speaking and singing voice as a young child, respectively. Agatha Lee Monn portrayed her as a nine-year-old (singing). In "Frozen II", Hadley Gannaway provided her voice as a young child while Stubenrauch is the archive audio. Created by co-directors Jennifer Lee and Chris Buck, Anna is loosely based on Gerda, a character from the Danish fairytale "The Snow Queen" by Hans Christian Andersen.