This is what we found on Wikipedia regarding the Vader:

Darth Vader () is a fictional character in the Star Wars franchise. He was first introduced in the original film trilogy as the primary antagonist and one of the leaders of the Galactic Empire. He has become one of the most iconic villains of cinema.

The prequel trilogy chronicles Vader's childhood as a precocious human slave named Anakin Skywalker, liberation by the Jedi Order, and young adulthood as a morally conflicted Jedi Knight, under the mentorship of Obi-Wan Kenobi. Skywalker is secretly lured into the Sith warrior cult by the Galactic Republic politician Palpatine. When Palpatine seizes control of the galaxy as its Emperor, Skywalker abandons the Jedi Order and, during a duel with Kenobi, is severely mutilated and thereafter transformed into a cyborg whom Palpatine rebrands as the Sith lord Darth Vader. He serves the Emperor for over two decades, hunting down the remaining Jedi, including Kenobi, and attempting to crush the rebels who oppose the new Empire. Finally, when Palpatine tries to kill Vader's son Luke, the Sith lord turns against his master, leading to the mutual destruction of Palpatine and Vader, which effectively brings the Empire to its end.

In secret, Vader is the husband of Padmé Amidala, the father of Luke Skywalker and his twin sister Leia Organa, and the grandfather of Ben Solo (later known as Kylo Ren).

David Prowse physically portrays Vader in the original trilogy, while James Earl Jones provides his voice in all of the films and some television series. Sebastian Shaw portrays Anakin in Return of the Jedi (1983), while Jake Lloyd and Hayden Christensen portray Anakin in the prequel trilogy, with Christensen reprising the role in the series Obi-Wan Kenobi (2022) and Ahsoka (2023). In the standalone film Rogue One (2016), Vader is portrayed by Spencer Wilding and Daniel Naprous. The character also appears in novels, comics, and video games.