OF COURSE!! It's probably just gonna be a bunch of random stuff lmao, So! starting off:

Jekyll and Hyde come to find that Elias is surprisingly romantic. Pairing the fact that Jekyll believed that Lanyon wasn't even really capable of romantic love with the fear Lanyon had with falling for anyone or becoming vulnerable, it makes sense that Elias would be all that vulnerability. When Lanyon's out and about shopping, or just strolling by stores, Elias will point out things he thinks Jekyll and/or Hyde would like and will annoy Lanyon into buying it. Eventually, there are things Lanyon will see himself and just get without Elias's pestering.

Sometimes Elias lets Rachel do his hair while they talk (usually when Jekyll is too busy, or when Hyde's already run off for the night.) She enjoys it quite a bit, and it gives Elias the ability to ask her for advice on things (and it lets him eat more of her cookies, but that's not the MAIN reason) it's nice for Lanyon sometimes too, because he can get Elias to ask about things that he's having trouble with with less embarrassment.

Elias actually cares about all the doctory stuff Lanyon learned (and mostly forgot) from University. When around, he acts as a sort of nurse for the Society. He even got a run down on some of the medicinal potions Jekyll and Ito keep stocked so he knows what to use in certain situations.

He strives for approval and any words of affirmation, sometimes going a bit out of his way just to get that jolt of happiness when someone gives him any sort of praise. Elias receiving said praise makes Lanyon quite jealous, since he, of course, wishes it could be directed at him for once. He denies the feeling, but that doesn't stop the growing disdain he feels towards Elias.

Lanyon and Elias lowkey act like rivals most the time. You thought Hyde was annoying towards Jekyll? Well at least they mostly got along for ~2 years. Lanyon and Elias though? half the time they're just trying to one up each other. But! they certainly have their moments where they get along. Lanyon eventually finds that it's easier to be more honest with Elias, and sometimes they do have little heart to hearts, but also these two dramatic bastards do tend to annoy tf out of each other. Elias tends to fluster Lanyon quite often, usually going on about Jekyll and/or Hyde in constant yearning. Eventually Lanyon gets used to it and gets less visibly flustered, mainly because he was sick of all the questions he got.

Sliding in another little Hyde HC I have, Elias likes listening to Hyde play the piano. Like, a lot. He'll sit on the little bench all love struck. Same goes for Jekyll's singing, though usually Lanyon has to coax that out of him (though Elias can with enough pleading, or making him flustered enough)

they'll also occasionally dance! Jekyll and Lanyon tend more towards the usual waltzes, while Hyde and Elias do more swing type stuff (Elias can't keep up super well, but he really enjoys it. Hyde will slow down justt a bit, sometimes) additionally, Jekyll and Elias would also do waltzy type stuff, while Hyde and Lanyon would go slow for a bit until Hyde gets too antsy and pulls more of that playfulness out of Lanyon, going a bit more wild.

Okay! That's all for now, and also I'm so sorry this took so long 💀💀