Charles often appears as a character in his younger brotherRobert Crumb's comic stories and autobiographical writings; Robert credits Charles' childhood obsession with making comics as the foundation of Robert's own devotion to his art. The two brothers drew comics together as children, often about "Animal Town" — one of the characters of which was Fuzzy the Bunny, who served as an alter ego for Charles, his creator. Robert later created several works, adapted from things that he and Charles did as children, as well as telling stories about Charles in his comics. For instance, in 1970, Robert redrew an early Fuzzy the Bunny story written by Charles in 1952; it was published in Zap Comix #5. As Charles entered adulthood, he began showing signs of mental illness. He later said that he had "homosexual pedophiliac tendencies". According to his own testimony, Charles Crumb never succumbed to his urges, and remained determined not to. As a teenager, he had already developed a particular obsession for Bobby Driscoll, child star of the 1950 Disney filmTreasure Island, and much of his artworkfocused on themes and characters from the film and novel. However, Bobby Driscoll was born in 1937 – only five years before Charles himself – so the latter's self-professed pedophilia may actually have been a misguided over-anxiety, induced by his fixation on Treasure Island and one of its lead actors who was, in reality, considerably older than himself. Throughout the years, Charles remained constantly terrified that his sexual tendencies would be discovered by his mother, or by anyone. During his adult life Charles never left his family home, where he lived with his mother, and rarely ventured outside. In c. 1972, Charles was staying in a Philadelphia-area psychiatric hospital, where he was visited by Robert, who subsequently drew a story, "Fuzzy the Bunny in 'Nut Factory Blues,'" that was mostly made up of dialogue between the two brothers taken from Robert's visit. In Charles' adult years, his artwork exhibited repetitive and painstaking concentric lines, filling in otherwise normal, Crumbesque drawings, reflecting an obsession with filling every last centimeter of white space. Charles Crumb and his artwork received wide public attention, as a result of the success of the 1994 feature-length documentary filmCrumb, in which Charles and some of his work are featured prominently. His artwork, including notebooks filled with tiny gestural marks that suggest handwriting, has been published and exhibited, sometimes in the context of outsider art. In the film Crumb, R. Crumb describes how Charles would often react to things by saying "How perfectly goddamned delightful it all is, to be sure." It was a catch-phrase of his. Robert remarks, "Whenever he said that, it always took the wind out of my sails." Charles Crumb committed suicide in February 1992. He reportedly died as a result of an overdose. After Charles committed suicide, his mother threw out a great deal of his artwork as she thought, "No one would be interested in it. The Crumb documentary was dedicated to his memory.