I just look up Ambrosius and Ballister's swords since I am not the most well versed in weaponry and all, and guess what, even the swords has parallels going on too. I don't know if anyone pointed this one out but it is really interesting, not much foreshadow but fun anyway. Eh, spoilers warning if you haven't finished Nimona yet, go watch it pls its scrumptious.
Im gonna start with Ambrosius'. His sword is called an estoc, a stabby sword. Nice pointy tip right there, ready to skewer through amours right. And with Bal, we have a chonky, chop-chop broad sword with sharp sides and a triangular looking tip. Suitable to cut through, as opposed to the estoc. They are, once again, the polar opposite of eachother.
But it does not end there. In the course of the movie, these two swords were at least once used with completely opposite intention. The elegant estoc was used to disarm Bal, while the broad sword was used to stab through Nimona as Ambrosius! And the fact that it was used on both of them (well, supposedly)! My oh my this movie is incredible.