Former camper at Dear Old Camp Grizzly. No lines, no development of character on the show.
While her part on
Daria is small, Michelle is a significant character in that she was created as a likeness to a Daria fan and fanfic writer, coincidentally also named Michelle Klein-Hass.
Michelle is known as "MsGeek" in Daria fandom, and her website, complete with the story of how she got on the show, can be found here.
(Note - the character of Michelle Klein-Hass and her picture appear here without her permission, as I was unable to get in touch with her. If you are Michelle and don't want your character to appear here, I will remove this page from the database.)