Warning! This article contains spoilers for Star Wars: Darth Vader #42 Many Star Wars fans have absolutely no idea what Darth Vader went through between the events of Empire Strikes Back and Return of the Jedi. The original trilogy may seem like a contained story on the surface, but further exploration into that era of Star Wars canon shows that the movies barely scratched the surface of what these characters got themselves into. And Darth Vader is perhaps the best example, especially because he turned his armor from junk into a superweapon after Episode V.

https://screenrant.com/darth-vader-turned-armor-junk-superweapon-star-wars/