Despite being a controversial character within the recent Star Wars trilogy, Kylo Ren aka Ben Solo has a very interesting story arc unfolding. In the force awakens, we see a younger Kylo, a young man that struggles with the force. We feel the pull of light and darkness within him. We eventually see his path down the dark side only deepen when he killed his father, Han Solo. This action and choice filled him with doubt. In that moment, We see a sense of remorse in his eyes.
We see his path unfold more so with The Last Jedi. Rian Johnson attempted to further dive into Kylo’s past and dig up old emotions, furthering our understanding of his psychology. We begin to see that Kylo is turning into a victim, Rather than a blood thirsty leader of the first order. We really see him evolve along side Rey as they share a bond that only becomes stronger as time passes. Kylo develops sympathy and a yearning for companionship. Towards the end, Rey and Kylo have team up to take down Supreme Leader Snoke, which unfortunately was short lived.