Often used to transport Totoros, in the film it makes an exception to help King Totoro, who asked it to whisk Mei and Satsuki over the countryside to see their mother in the hospital, who was suffering from tuberculosis.
Often used to transport Totoros, in the film it makes an exception to help King Totoro, who asked it to help Satsuki find her lost sister Mei. After the sisters are reunited, the Catbus volunteers to whisk Mei and Satsuki over the countryside to see their mother in the hospital, who was suffering from tuberculosis.