The series was first revealed to be in the works in December 2016 at CCXP in Brazil. On August 2, 2017, Cinematoday.jp published an article which revealed that the project was a collaboration with
Netflix to make a new adaptation of the manga and anime classic series. Yoshiharu Ashino was announced as the director, and Eugene Son among others as the writers. The first six episodes were released on Netflix on July 19, 2019, and loosely adapts the "Galaxian Wars" and the "Black Knights" arcs from the manga. Another six episodes that loosely adapt the "Silver Knights" arc were released on January 23, 2020. A second season, titled , was announced on June 29, 2022. It premiered on July 31, 2022.
Crunchyroll licensed the sequel outside of Asia. Part 2 of the second season was announced on December 3, 2022 and premiered on April 1, 2024. ==Voice cast==