I was wondering, how do you think that Dean’s big brother instincts change from the show to each of his interactions with the different littles or when he’s a little himself? (Maybe not change so much as change how their expressed…)

It all depends on the little in question!

As far is Sam is concerned, he is ultra protective, but the first thing Sam will do is scold him for not giving him space or independence. Dean tends to take stuff like that to heart, so he’ll lay off (a little), and Sam won’t feel so stifled.

Of course, if you don’t tell Dean right off, he tends to get in habits, and might end up just casually picking you up and taking you wherever he is, as Jacob can well attest to in certain future AUs. Sam would be the first to tell him he shouldn’t let Dean get set in his ways! 

As a little himself, he’s an incredibly fussy guy. He’ll lecture Sam for days if he gets himself picked on at school, and when Sam’s a smol Dean does his best to keep him away from danger. It’s a lot harder for the little guy, but he tries!

February 21st excerpt:

There was still a slight flush to his cheeks when he met Jacob’s warm brown eyes above. “Do you think I could stick around for a bit?” Sam asked hopefully, not wanting to go back in the walls sooner than he had to and waste the one chance he had at getting out. If Dean learned he’d slipped away while he was out, he’d end up under an even closer watch.

Jacob grinned, glad to hear that Sam actually wanted to hang out. Seeing the small hunter walk away from the desk, his shelter, to approach Jacob had been amazing on its own. Jacob’s shadow was overhead and he knew he loomed even when he tried not to, but Sam had come towards him anyway, putting trust in Jacob.