Karen Crawly (usually referred to as Miss Crawly) is a female iguana who is one of the secondary tritagonists of the movie Sing. She also stars in the Sing home release-exclusive short "Love At First Sight".
Miss Crawly is an anthropomorphic iguana with a long tail. Her right eye is made of glass which often falls out. She wears a yellow dress with dark yellow flowers and white shoes. She also wears a green cap.
Miss Crawly is a caring person who tries to work as best she can, although she tends to make mistakes due to her age and constantly loses her glass eye. When she does something wrong she gets really sad and feels bad for her actions, even to the point of crying sometimes. She enjoys working for Buster Moon, sticking by him through everything, even after the theater is destroyed, comforting Buster when everything he'd worked and fought for was in pieces.
She is a capable music teacher, as she personally tutored Johnny in playing the piano to prepare him for his number.
Miss Crawly has been Buster's assistant for an unknown number of years.