Grandma Barksdale

Helen Morgendorffer's mother, who is never directly seen or heard from in the Daria series. Her presence, however, is felt from Erin's wedding onward ("I Don't"). It is implied that she is unable to travel. Of her three daughters, she is closest to Rita Barksdale and appears to favor her over Helen and Amy. This spawned a long-running feud between the three sisters that is finally (one hopes) resolved in "Aunt Nauseum."

Fanfiction
The character was expanded in numerous fanfics. Kara Wild named her Evelyn in the Driven Wild Universe and made her generally crusty, but loving. Later, Richard Lobinske would create Tess Barksdale in the fanfiction series, Falling Into College.