The Eternaut (Spanish: El Eternauta) is an upcoming Argentine television series created by Bruno Stagnaro, based on the comic of the same name by Héctor Germán Oesterheld and Francisco Solano López.

"[1] In 1968, advertisement production company Gil & Bertolini acquired the rights to The Eternaut to make an animated television series, to be presented at the First World Comic Book Biennial.

[7] She worked on the script for a year and a half,[4] which would take place in the present day, but the Oesterheld family considered it strayed too far from the source material, the producers stepped down and the project went stagnant.

[8][4] In 2018, Spanish filmmaker Álex de la Iglesia expressed interest in making an adaptation, with actor Ricardo Darín on board to star in the project.

[9] In February 2020, Netflix co-founder Reed Hastings announced they would produce a series adaptation of The Eternaut, directed by Bruno Stagnaro with filmmaker Martín Oesterheld —the author's grandson– as a consultant.

[11] In August 2021, Netflix Vice President for Latin American Content Francisco Ramos assured that the project was still moving forward, but that the series wouldn't be released before 2023 due to complications related to the COVID-19 pandemic.

[18] The cast was announced to include Carla Peterson, César Troncoso, Andrea Pietra, Ariel Staltari, Marcelo Subiotto, Claudio Martínez Bel, Orianna Cárdenas, and Mora Fisz.