11:33 PM
The thing is, Didimus never stops smiling. Ever.
Gemella on the other hand has a blank expression when Didimus isn't nearby. And when Gemella is ripping Didimus to pieces, she smiles. And laughs.
Another thing is what happens when someone tries to subdue them.
If conventional weapons are used on them, Gemella gets taken out.
Didimus proceeds to destroy whatever it is that attacked them with a smile on her face.
If conventional weapons are used on them (like a flashbang or something), Didimus gets taken out.
Gemella turns on their common foe with an expression of anger instead of hatred. As though she's angry that someone would dare interfere with their cat-and-mouse game.
The players are going to learn this in a most direct way.
I think that's pretty much it for those two.