Free from guile, art, craft, or stratagem; characterized by simplicity and sincerity; sincere; guileless; ingenuous; honest; as, an artless mind; an artless tale.
Artless is episode number 148 of the 1987 Teenage Mutant Ninja Turtles cartoon series. The episode is a part of the Vacation in Europe series from 1992-1993. The Vacation in Europe series take place during season 4.