"God Gas." The gas induces a violent hallucination in him, in which he sees Venture and Billy as demonic figures. While attacking Billy, he was confronted by The Monarch and 21 in their Blue Morpho and Kano alter-egos; 21 rescued Billy and knocked Haranguetan into a pit, killing him. Battleaxe (voiced by Barbara Rosenblat): Haranguetan's Irish widow and a supervillain in her own right, who owns and manages a pub. When informed by Dr. Mrs. The Monarch of her husband's death, she becomes emotional and suits up in her villain costume and makeup to retrieve his vehicle, the Haranguetank, from impound. After doing so she becomes intoxicated and begins driving to confront Dr. Venture, whom she believes to be the Blue Morpho, only to hit Think Tank and drive into the same pit where Haranguetan died. Though seemingly killed alongside Think Tank, she is later revealed to have survived and returned to running her pub. Copy-Cat (voiced by Toby Huss): A New York-based supervillain with the ability to produce duplicates of himself. He is smooth and womanizing, with no concern for the marital status of the objects of his interest. He attempts to seduce Dr. Mrs. The Monarch at Wide Wale's party and uses his powers along with The Monarch's stolen costume to frame him for illegally arching Dr. Venture. Despite failing in his seduction, he succeeds in increasing the rift between her and The Monarch. Though unconfirmed to be him, a similar looking man appears in All This and Gargantua-2 as the lounge singer promoted for Gargantua-2's casino. Inspired visually, as well as in speech pattern, by Dean Martin, though his voice is an impression of Frank Sinatra. Dr. Nidaba/Think Tank (voiced by Jeffrey Wright): A genius supervillain who works as a professor of philosophy in his civilian persona, whose class is attended by both Dean Venture and Brown Widow. Upon receiving permission to arch Dr. Venture, he swiftly deduces that Dean is distracted from his classes by his home life and advises him to try to avoid his home situation, as he does not want to lose his best student. Later, donning a purple, tank-shaped suit of armor that grants him various abilities – such as the ability to ride up walls, project barriers and shoot laser projectiles – he attacks Venture, only for his plans to play chess fail when Venture informs him he does not play