We could dig around for more details, but I think people are growing bored with my tendency for long-winded answers ^^;

Oh not at all. I like reading them! And keep in mind I'm quite new to the setting.

So it sounds like I actually have good reasons for Asoka to have survived. Not reasons why she would have survived, but good reasons why she could. Consider the Emperor probably gets hold of a list of Jedi when the temple is raided. Asoka wont be on that list. The Emperor's agents pursue all the rumours and eyewitness accounts about Jedi. Asoka wont have been travelling as or calling herself a Jedi for some time by the time of Order #66. The clones were ordered to kill Jedi and on the pretext that the Jedi order was staging a coup. Asoka wouldn't fall under this order and they also wouldn't think she should because she was an exile from the order. The greatest threat to the Jedi was Vader who was motivated by the belief the Jedi order needed to be destroyed. Asoka wasn't part of that and additionally as a former good friend and student of Anakin's who he both cared for and who had been sympathetic to his troubles with being part of the order, walking away as he had often wanted to, he could well have chosen not to hunt her down. Maybe he would have but I think he may not. Yes, he was twisted and evil, but I feel there was good in him for some reason.

So - long-winded post if my own. But anyway, I've decided the message is for Asoka. If she is alive, I think Rex would believe she'd find out about and read the autobiography of a long-lost friend from long ago.

How well-known was Vader's true Identity? For all my exposure to the EU (which is minimal in comparison), that secret was well kept. Rex, being captain of the 501st, would have been part of Operation Knightfall, he would have known who Darth Vader was, perhaps hidden within his memoirs was Vader's true identity. Ahsoka definitely would have interest in knowing who killed all her friends.

Let me know when you connect all the dots, I would be very interested in "borrowing" your idea.

I've always assumed the Vader's real identity was not widely known. I've kind of thought some would know, but never really figured out who or thought about it that hard (Palpatine, of course. . Does Askoka know? I hadn't considered that she wouldn't. Wow. That would be devastating to find out Vader was really her old master. Though maybe she suspected - I haven't thought it through.

Wow. Great ideas. The idea that it contains Vader's true identity is compelling. But for it to work in the game, there would need to be some reason why that mattered to the Galaxy at large.

How would Rex know Vader's real identity? From serving under Vader shortly after the events of RotS?

Rex would be getting on in years now. Still hale and hearty but more in a Bruce Willis in "Red" mode than a Bruce Willis in "Die Hard 1" mode. (Don't watch "Red" just to see what I'm talking about though - dreadful film). From what I read he eventually became quite disillusioned and isolated during the Empire years, training new storm troopers who were no longer his brothers and whom he didn't respect. Despite Order #66 and how he was used by Palpatine as part of bringing down the Republic, he was a small figure swept along by history and as much victim as anyone else - he never had any real agency. So I'd like to take a sympathetic view on him and I could perhaps see him nostalgically reaching out to former comrades. Asoka would have had his respect and is a very distinctive character for the story.

I'm kind of leaning toward him having some great treasure or powerful weapon hidden away from some action during the war. An action on a planet that he was one of few survivors of, or similar. Never having really known what to do or who to trust with it, maybe in his later years he sends clues out to Asoka thinking she is a better person to handle such things than he, a simple old soldier.

I just thought of something... I hesitate to rain on the Rex parade because it's a great idea, but...

In the TCW episode where Ahsoka is accused of treason, and it looks like she's killed a bunch of clones escaping, while in Anakin's presence Rex tells another clone that "he's worked with her before, she would never do this." But the minute Anakin is gone, he reiterates over the comm that she's killed several clones and is dangerous. It's fast and subtle, but it's there.

Is that the chip talking? Does he harbour ill-feelings towards most Jedi? Is he solely loyal to Anakin?

That's interesting. I'll have to re-watch that.

Maybe he squirreled away a cache of weapons and other goodies?

If your players are considering moving into AoR something like this could work.

Over the years he realized how he was used and he hated it. (fill in with all sorts of story)

He finds others that feel the same. (somehow, fill in the story)

He makes a small 'team' of people that steal all sorts of goodies from the Empire and stash them somewhere. The book is a code that gives the locations of several caches of equipment.

Just a thought.

Something I noted, but I didn't see anyone mention it earlier, is that Rex was not in command of the 501st at the time of Order 66. He had ceded command to another clone, so I would be curious of his fate. I really like this idea.