Jacen Solo easily. A phenomenal Jedi and honestly my favorite of the solo children. He fought for the Jedi to show compassion to life in the galaxy, enemies included. He also didn’t want Luke’s order to become too involved with the political trappings of the new republic. He’s literally the Qui Gon Jinn of his generation of Jedi and he wanted his fellow Jedi to decide for themselves what they believe a Jedi should aspire to be and not just what was written in a code. Even though I don’t fully support his turn to the darkside it was still an okay storyline considering it had a lot of buildup towards his becoming Darth Caedus. With him being afraid of his continuing close calls with the darkside and him cutting himself off from the force as a result of that. It all cumulated into Lumiya manipulating him with promises of the darkside being necessary to prevent future suffering even though he ended up causing his family future suffering but hey potato petato.