At first I thought of the pranks that military or colleges play on each other; steal each others mascots or guidon amongst other things. Then the guards being upended sort of ruined that thought and upped the maliciousness of the entire thing.
If they guards could be that easily subdued and the castle that easily robbed, this king would most likely be mocked and nobody would fear him or his armies. Ripe for takeover. He may have to do a show of force just to get some respect back and prove he isn't that defenseless.
The kid one, without some crazy magic, seems a bit too far fetched to be likely but I do love the idea of the pacifist shaman!
A very original idea and one that definitely contains some great inspiration! Go to Comment
Reads like a nice convoluted plan that is complex enough to leave plenty of room for PC interaction yet easy enough to follow. Not sure I could add anything without knowing which way you are intending to go with it. But as far as that, it seems you have a solid plan for it all already. Go to Comment
Seems like I got to it after a lot of edits because I think this is a great NPC. I haven't read the linked plot yet, but I don't have to in order to enjoy the use I could get out of this person.
As is, he is an honorable knight thrown from his order and now an escaped convict. Still honorable from what I gather here, with a past he needs to hide out of necessity. Shouldered with guilt and probably with a need to track down the truth and clear his name he will always have an alternate, primary motivation besides what the PCs may expect from him. A very nice background for a complicated NPC.
You could use the betrayed background to good effect in many ways and, while the initial setup is specific with the knights of thrul and all that, it would be a very simple thing to make it fit in almost any game.