Bruce flirts his way through every gala he doesn't want to be at, but anytime a member of the justice league, or the rouges, flirts with him he is so glad that he wears a cowl that covers most of his cheeks
Dick and Damian have darker skin the most of the batfam so you can't see anything, but when genuinely complimented Damian gets more staticy and embarrassed while Dick lights up
Speaking of lighting up- Duke glows. Like literally. You can't see any freckles on his face, but when he's embarrassed you can see little splatters of actual sunlight on his face
Jason doesn't blush. Unless it's Wonder Woman. In that case he does the little look down smile with the hand at the back of his neck
You try to make Cass blush by complimenting her and she gives you a soft smile and a compliment that makes you blush instead.
Steph doesn't blush easily, and if so only when she's really embarrassed less so flustered
Tim is a disaster. Steph's starting to think that his face is alway red. He blushes so easily, when he’s flustered, when he's embarrassed, when he gets really excited about something, when he gets worked up about something- Literally everything
Despite his celestial heritage, Ambroys lacks the most awe-inspiring features of his kin. No wings, only two eyes, a distinctly mortal proclivity for failure... you could almost mistake him for human.