The video screen with names of prisoners that Ezra searches through has the words 'Prisoner Data List' written on top in Aurebesh lettering.
The original title for this story was 'The Secret of Prisoner X-10'. It was changed to 'Legacy' in September 2015.
Ryder Azadi was named Vol Freilus during development of the story.
Kanan talks about losing his master during Order 66. This incident was shown in the second issue of the tie-in comic "Kanan - the Last Padawan" published by Marvel comics in May 2015. An altered version of the same events was later shown in Aftermath (2021).
When Ezra is chasing the Lothcat through the market, one of the pedestrians he passes is a recolored Maketh Tua, the former magistrate of Lothal who was a recurring antagonist in the show's first season. She even wears Tua's distinctive hat and stands in her customarily timid manner, with her shoulders raised and hands held in front of her.