Marchioness Argas (侯爵夫人ナガヒメダニ属, Koushaku Fujin Nagahimedani Zoku?) is a character from the manga version of Final Fantasy XII, appearing in chapter two, Eternal Vow. She is Ashe's attendant and is like a sister to her.
She was later revealed to be part of a Neo-Rozarria faction that was meant to kill Ashe's father. Yet Ashe and Rasler found out of these plans and went to stop her from assassinating the king. Her arm was later cut off by Basch, who was waiting for her to admit her intentions.
It is later revealed that Argas's plan to assassinate the king had already been anticipated and Basch and Rasler's plan had been to expose and capture Argas and her conspirators.