In the episode "ADD: The Last D Stands for Disorder" Joan admits to being a "goth" and has a very moody, cynical, aloof, sarcastic and angst-ridden personality. She has a tendency to erupt melodramatically into tears, usually when Abe ignores her advances or scores with Cleopatra. She hates Cleopatra considering her to be a bimbo and a snob but develops a special hatred when Cleo starts dating Abe and when she is forced to live with Cleo because her house burnt down. Joan prefers to confide in various characters such as Mr. Butlertron, Gandhi, and Jesus Cristo when she needs emotional support, though she also frequently allows Abe to obliviously confide in her regarding his infatuation with Cleo and their amorous affairs together, much to her emotional detriment.