Aunt Agatha "Aggie" Marbles is April's aunt in the 1987 TV series. She appeared in the episodes "Case of the Hot Kimono", when she helped the turtles to investigation the stolen kimonos and in confrontation with Don Turtelli, and "Sleuth on the Loose".
She also helped the turtles to investigate Dynamic Science Labs.
- Her name was inspired by Agatha Christie's Miss Marple.
- Mark Pellegrini (30 June 2015). Sleuth on the Loose (English). Adventures in Poor Taste. Retrieved on May 10, 2017.