Invisible Muriel is the fourth episode of Season Two and the seventeenth episode in total. It aired on January 19, 2001. It follows Courage Meets the Mummy. Synopsis A government facility captures Muriel after Courage gives her a magical gem that turns her invisible. The cure must be found in time to save her. Trivia First appearance of The Federal Agents. Confusions When Eustace is invisible the second time, Dr. Vindaloo tells him not to wear any clothes (except his hat and glasses). But when he was turned into a gold statue, he's wearing boxers possibly to cover up his lower regions due to censorship. Retrieved from "https://courage.fandom.com/wiki/Invisible_Muriel_(episode)?oldid=33392" Categories: Episodes Season 1 2001 Season 1b Community content is available under CC-BY-SA unless otherwise noted.