Berta is the wife of Avogadro and makes sure there is always dinner on the table for when he gets in from work. She is cheerful with a loud laugh.
Berta wears a blue apron and a lilac sweater underneath.
Berta gives the following puzzles in Professor Layton and the Unwound Future:
"Berta is a cheerful, motherly type with a loud laugh. She doesn't let trifles worry her and thoroughly enjoys her life in future London. She doesn't see much of her husband, Avogadro, but still has food on the table whenever he gets home."