The fabled Mabel von Injoface XIII, also called Mabel Thirteen or Mabel 13, abbriviated M13, is an ancestor of the current Mabel and the thirteenth puffle to carry the Mabel linear name. Of the nineteen Mabels in existence, she was the only one to end up being a happy and/or positive puffle. She was renowned to be a tomboy in comparison to all other female Injoface members and was owned by Explorer II. The Injoface family denounced this Mabel and had them all swear to a vow of scerecy to never mention her outside of private talks.