Tony is.... real sorry he dropped the ball on this one. He's got some nanotech on him, so could, conceivably, build a cage for Remus. It's just metals though and with not enough time for preplanning, Remus could probably get out of it. Listen. He's been really busy with his kids and stuff.
Sirius is one hundred percent going to be there. He's sick as hell, but he'll be damned if he leaves Moony alone. He'll try for distraction like he always does. He'll also just... keep getting in the way in order to protect Remus and others. but mostly remus
Clint is fine? he doesn't really wanna arrow the library guy, but I think he'd camp out on a roof and keep an eye on things and definitely take some shots if necessary. He's got asplodey arrows he can use as distractions.
Loki isn't about it. And he's not going to be about it.
Ben also isn't about it.
Quill -- will jump in like the idiot he is if it's necessary. Like, if Gamora or Nebula are in trouble. Or maybe even Pyro since theyre buds. But mostly, ngl, he might just be kinda interested in seeing a werewolf.
Constantine is gonna pull for big damn hero. He's physically mostly fine from the sickness, but when he does magic his nose decides to bleed all over the place. nevertheless, he's got some good moves on him. he can do up some illusions, make shield barriers, etc.