Helen is the only Morgendorffer who never has their name appear in an episode title.
In the Pilot "Esteemers" Daria publicly announces that Quinn is her sister as the members of the fashion club are sitting in front of Quinn yet throughout the series the other girls in the Fashion Club believe Quinn when she says "Daria is my Cousin".
During the closing credits, the show's characters appear in various costumes.
When syndicated for the cable channel Noggin, much of the swearing and mature dialogue and situations was removed from episodes to fit the channel's demographic. Some episodes are not shown at all due to the more "adult" themes.