they also used to be very neutral with their body language/facial expressions though this was also a consequence of being in the army.
it's eased up as they've become comfortable with themself and the people around them!

ok i'm done yapping lmao

they're also quite stubborn about their traditions, their likes and dislikes. for example, they're very dismissive of any Reapers that don't follow the traditional Garlean way.
they can have very black-and-white thinking, though this has relaxed significantly with therapy.

they also have EXTREME time blindness- they can put together events on a general scale but they couldn't tell you when exactly something happened in their past, or what order it happened in.
if something isn't interesting to them, they tend to disengage pretty quickly.

of course the truth is a little more complex- it's more along the lines of 'twin flames', where two souls keep finding each other through reincarnations to try and overcome some kind of central fault or flaw carried down from some past event from their ancients. carries over across all shards.