headcanon that, in school, Duke is a very oldest-child student—respectful, helpful, keeps his peers organized, etc—so teachers are SHOCKED when his older siblings show up and they see him acting like the youngest sibling he truly is at heart
Art teacher: *to other teacher* oh, Duke? He’s a good kid, yeah, always helping me put away the supplies after cla—
Halfway across the parking lot:
Jason: *pulls into lot with Dragula blasting from his motorcycle at full volume* EY, DUKE
Duke: *high-fives him, jumps on the still-moving motorcycle with no helmet* yo, I didn’t know you were picking me up!
Jason: hold up. *tosses helmet at him* B would have my head.
Bats: *drive away, Dragula still blasting at full volume*
*at parent-teacher conference*
Math teacher: Duke’s grades are very stable, he’s an overall delight to have in the class. One of the most mathematically-minded students I’ve come across, for su—
Dick: *scandalized gasp* wait, he’s GOOD at math??? That little fucker’s been lying to get out of grocery duty, then!
Math teacher: *clutches pearls* pardon your fucking French, young man—