In the Japanese version she is known as Midori Yoshinaga (but after getting married her last name became Ishizaka but that's a different story), and she is one of the Kindergarten staff who looks after Shin Nohara and his friends.
She is very nice towards the children but is always in an intense rivalry with Ume Matsuzaka (Miss Katz/Uma) who is also a Kindergarten staff member.
In the Vitello English dub she was renamed Miss Dori and was voiced by Anndi McAfee.
When the dub got canceled and Phuuz continued with their own dub the character was voiced by Cindy Robinson.
In the Funimation English dub she was renamed Miss Anderson and is voiced by Caitlin Glass.