Ben Solo (formerly known as Kylo Ren) is the central antagonist of the Star Wars sequel trilogy.
The son of Leia Organa and Han Solo, Been was once the padawan of his uncle Luke Skywalker before he was seduced by the Dark side by Supreme Leader Snoke. He is the son of Leia Organa and Han Solo and Supreme Leader of the First Order, and the grandson of Padmé Amidala and Anakin Skywalker. During the sequel trilogy, he develops an intimate and complicated relationship with the protagonist Rey Skywalker, who is his love interest and together they form a dyad in the Force. In the end, he resurrects her, saving the woman he loves.
In the films and various media, Ben Solo was portrayed and voiced by Adam Driver.
Kylo Ren is the secondary antagonist of the first installment Star Wars: Episode VII - The Force Awakens and the main antagonist of the second installment Star Wars: Episode VIII - The Last Jedi before he progressively becomes the deuteragonist of the final installment Star Wars: Episode IX - The Rise of Skywalker. He is also the overarching antagonist of Season 2 of the 2018-2020 animated television series Star Wars Resistance and the titular protagonist of the 2019-2020 comic miniseries The Rise of Kylo Ren.[1]
Trivia
Despite him aiming to be as strong as Darth Vader and Snoke claiming that they are different, Ben has more in common with his maternal grandfather than he thinks.
They both begin as Jedi Padawans who have a powerful and strong connection to the Force.
They are both expert pilots.
Both Anakin and Ben struggle with their powers, especially when it comes to the dark side of the Force.
They are corrupted by an evil Force user (Snoke and Darth Sidious), who recruit them when they are desperate and losing faith in their family/Jedi Order. (Ben was seduced by the dark side because of his struggling relationship with his parents and uncle, and Anakin due to losing faith in the Jedi Order and in hopes to save Padmé from dying).
They both adopt an alias, immediately discarding their birth names. (Anakin becoming Darth Vader and Ben becoming Kylo Ren), adopt a red-bladed Lightsaber and wear black masks, armor, and cape.
They develop some form of bond with the main protagonists (Rey and Luke) and hope to corrupt them with the dark side) and both Anakin and Ben offer them to rule the Galaxy together.
Ben and Anakin are redeemed through the love of their family and loved ones (Leia, Han and Rey; and Luke respectively).
They are also both in love with a strong, bold, and brown haired women, Rey and Padmé. However, while Ben's and Rey's relationship begins flawed and subsequently improves in the Sequel Trilogy, Padmé and Anakin's romance falls apart, given their romance was forbidden.
Ben succeeded in reaching the woman he loved, by sacrificing his life force to Rey so she could live. As Vader turned to the dark side to save Padmé's life but failed in doing so, by reviving Rey, Ben accomplished in a different way than what he initially expected to finish something that his grandfather started.