In the last few decades, there has been a revival of the Middle Ages, a phenomenon Umberto Eco already studied in his Dreaming of the Middle Ages (1986).
Revivals and re-visitations have recreated medievalism in different ways, as in the Harry Potter books and films, Game of Thrones, Marco Polo, The Last Kingdom, the Lord of the Rings films; movies like Dune and the Star Wars saga, instead, mix medieval fantasy and science fiction, like many popular videogames.
Star Wars echoes some very medieval ideas in a SCI-FI background: the (Jedi) knights and their swords, their chivalric code, the Arthurian legend with heroic quests and battles against enemies from evil kingdoms, war heroes, journeys and betrayals.
As for the characters in the picture:
“The parallels to the Arthurian cycle are obvious and numerous. For example, Luke gets his knowledge of the Jedi Knights and their noble values from the wise, mystical, a Merlin-like character, Obi-Wan Kenobi. These knights are custodians of peace and justice in this galactic civilization, and they are armed with appropriate weapons. Luke Skywalker’s Excalibur is a light saber […]. “
1979, Marilyn Sherman
Like Arthur, Luke Skywalker, the hero, does not know his parents, but is helped first by Obi-Wan Kenobi, similar to Merlin, then by Yoda; the Jedy knights are like the knights of the Round Table, but one of them, once the heroic Jedi Knight Anakin Skywalker, is seduced by the dark side of the Force and becomes the evil antagonist, with the name Darth Vader. Luke’s light saber, much like the Sword in the Stone or Excalibur, is the symbolic object given to the great warrior to fight for the oppressed defeating evil, leading people into a better future and saving the universe.