Bantha four five six represented a command sequence communicated by the droid TDL-3.5. Its purpose was to grant the droid permission to take over the role of caregiver for the Solo twins, previously held by C-3PO. Nevertheless, Winter discovered that the term bantha was not a legitimate family identifier. It was, in fact, a practical joke perpetrated by Anakin Solo, who was annoyed because C-3PO had declined to narrate his preferred bedtime story: The Little Lost Bantha Cub.