Jacen Solo is a fictional character from the Star Wars expanded universe, primarily featured in the New Jedi Order series. He is the son of Han Solo and Leia Organa, and the grandson of Darth Vader. Jacen is known for his strong connection to the Force and his journey to understand its complexities. Throughout his story arc, Jacen grapples with the moral implications of using his powers. His character evolves from a promising Jedi Knight to a controversial figure, ultimately becoming the Sith Lord known as Darth Caedus. His transformation raises questions about the nature of good and evil within the Star Wars narrative.