I've only written with Jax, but after observing him in our thread and the Korriban invasion, I am a fan. He is a very real character, and I think his personality really shines through, especially his care for others. He is very human, in the sense that you can feel what he does through your writing. He has very deep emotions, and I think you have done well in their portrayal.
My only critique from what I have seen is maybe trying to explore the language and have fun with it, as well as doing the same with personalization- but this is also a recommendation from what I personally like to read, so take it with a grain of salt! Your posts are very straight forward, which isn't necessarily a bad thing, as you also get a lot of clarity from them- I just think breaking from the mold and adding a bit of oomph could take you to the next level.
Just an example and specifics here:
Jax approached the young woman greeted him, he had to admit she looked attractive then again she is Zeltron a species who are noted for their alluring presence. She had long blue hair and blue eyes, Jax could sense that she can trust her but he wasn't entirely sure.
While it's very obvious how he feels and what he thinks of her, I feel there could be a bit of spice added. For example, why does Jax feel that he could trust her? Was it a sense of sincerity in her behavior, or just that she was a pretty girl? Why does he doubt, when she is a member of the order? Just because of the situation that is at hand, or is there a general distrust of strangers he has? I think that's where the personalization may be lacking a bit- but there are many ways to proceed with such a thing when you have the answers to those questions, and there's really no wrong way of doing it.
I also think there are options for exploring the language itself, such as "he had to admit she looked attractive"- again, very straight forward, and I feel that something like this could be played on- in the past when Ripley has been in similar situations, I usually will touch on the physical feelings it evokes, such as butterflies and the like, blushing, maybe nerves- but again, many ways of doing this, and none of them wrong.
All in all, I think you are doing a wonderful job, and I love reading your content and writing alongside you! Keep it up, can't wait to see what's in store for Jax.