Harriet Mullins is the former assistant of Cosmo Dinkley. He fired her for stealing rubies in Venezuela.
She has short, black, hair. She is tall and has a tanned complexion.
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The New Scooby-Doo Mysteries
When he went on an expedition (with Scooby-Doo Detective Agency) to find the Temple of Sirius, she followed, hoping he would lead her to it, and hoping for "sweet revenge." She has a parrot named Jocko which often repeats or paraphrases her words. (Ghosts of the Ancient Astronauts)