-shakes out the alt-o-box-
It really depends on a few things! The Mechari, while physically unable to cry, do have a range of sadness. Senyc and Omnix do to an extent - Senyc is a worry wart, he tends to think of possibilities and can get upset over them, as well as his phobia of Chua that can leave him BSOD. Omnix however, is young and doesn’t understand some things, she gets upset when misunderstood or misunderstands. Calibux doesn’t seem to get sad-cry but does anger lash out when he’s upset.
Out of the Draken, Emarrak and Koresi would. Emarrak is a dweeb and wears his emotions on his sleeve while he doesn’t have much tragedy in his life he can be easily hurt. Koresi on the other hand, has gone through much and when she does cry its by herself or with someone she’s trusts. Publically, no, she would rage first before sheading tears.
Chua… Pix Pop. Pix Pop is weird, they put their heart and soul into their work so for anyone to crap on that would cause the little Chua to burst into tears. Berri’s crying is all crocodile tears.
Cassians… Quin, he feels a lot, and has done a lot for his goals. But he is also prideful, not prone to cry around anyone. Including Sinclair. Yildiz is also a private crier when she is in control. But her esper abilities can make her unpredictable and usually if anyone does see her cry without her full trust is not her persay but the physic energy is enthralled to.
As for the Exiles… Poetrie doesn’t hide her emotions, she’ll cry when she needs to but tries to only cry in laughter. Tallahassee drowns his sorrows in booze..
Desh - Salsali, and not over something dramatic, but more so her own drama. She can’t stand to see her own work after a few hours of creating it so most of those tears are nothing solid.
Now Aurin.. Makoteh and Tundrean. Tundrean is a softy, just reminding him about his missing tail will put him in tears. Makoteh bottles everything up. When he’s stressed he curses, he lashes out. He doesn’t like anyone seeing him hurt, more liable to use a telekenic strike before allowing a tear to drop. But he is in a lot of deep pain as much as he denies it. He had been tortured and he had lost his tribe to his own foolishness. It haunts him and thinks the only thing holding himself together is never give in to that pain.