She was played by Hilary Van Dyke in the 1988 series The Munsters Today.

She attends Westbury College in Mockingbird Heights, the city where the Munsters live.

She is considered attractive by outsiders, but by the aesthetic standards of her family she is distressingly unattractive.

[2][3] Marilyn laments that she keeps scaring away potential boyfriends, not realizing that the young men are frightened away by her family.

In the original series Marilyn was played in the first thirteen episodes by Beverly Owen,[4] who left because she married and moved to New York,[5] and then by Pat Priest starting with the fourteenth episode.