Yan would be the biggest threat to your siblings. Even relations aren’t above his rules of “no hurting Senpai” and that includes insults or jokes directed at you.
Apocalypse would probably join in, which could be a danger to you and your siblings.
However, most of the others wouldn’t interfere unless you asked or they thought things were getting out of hand. If blood or bruises start showing then they’d definitely step in.I saw this post and really really wanted to add to it (I may have gone overboard…)
•Apocalypse joining like scribs said (if teasing like pinching and not actual rage fight) after you asked for help (“Babe help me!” *stalks to the back of you, chest puffed out and he pinches your arm/ass as he and your sibling grin at each other*) or cheering you on if you fight back.
•Natemare getting his stern voice out “Hey!” if you start to show physical injury (even a scratch) and dragging you away for cuddles and to apologise for not standing in earlier, lots of small kisses if verbal too
•Having to drag Yan out of the room at the slightest mean word directed your way, plus he gives you even more gifts that day because “You had a hard day Senpai.”
•I think the ask about Dark sent to scribs after this sums it up pretty well.
•Anti holding you back “I got this babe” as he takes your place in the playfight, or growling and being very soft with you that night later if verbal.
•Jackieboy man trying to retain the peace and standing in front of you to block any damage.
•Chase walking off and you think he doesn’t want to get involved until he shoots your sibling with a nerf gun from a hidden place.
•Robbie thinking you’re really getting hurt so wails loudly “No!!!” And you have to make sure your sibling doesn’t follow as you take him out the room and calm him.
•Wilford giggling at your silly play as he gets an actual gun out wanting to play too and you have to shield your sibling from that sight as you ‘remind’ Wilford that guns aren’t toys and not allowed.
•The angels (lightiplier and angeliceye) would keep it light, picking you up and running to other rooms laughing but also wanting to keep you from any potential harm. They will not tolerate any sort of verbal abuse though and immediately asks them to apologise even if you tell them it’s nothing.
•Dark Chica gets very protective, suddenly her furs standing on end and she’s starting to growl but you and Dark have taught her not to attack friends, children and strangers if without command, whereas Light Chica sits on your lap so the sibling can’t touch you, boops and licks you if they feel your heart change or anything if they say something mean.
•Google point blank stands in front of you straight and tall, holding a hand to their head to stop them if young and determined, and in his flat voice orders them “Stop.” Or he’ll come up with some witty yet too true insult that might even get you to become annoyed at him for going too far (he’s still learning those very wobbly boundaries).
•Host makes sure to use a few tricks in his whispered narration so you dodge every attack and your sibling falls over (not enough to hurt them) and they give up. Makes something good happen to you and bad (again not too bad, like stepping in dog dirt) happen to them.
•Marquess and Count may hypnotise them (if you’re not there to shout at him) to stop and start being nice to you the rest of the day, but will keep you on his lap so your sibling doesn’t dare touch you and you can’t retaliate (although I think they’d both be different in their approaches).
•All the Septic Sams would keep nudging the sibling further and further away, squeaking angrily.
Yes to this!