Okay so it's pretty late right now where I'm at so I though about writing something quick a simple so I'm going to name a scenario and I'm going to type in what a character from SnK would react so um yeah let's get started
Eren: Okay I think he would be easy to cuddle with like at the beginning we would be all cuddled up with you and then he would slowly push you away because I think he likes personal space and I think he might want to give you personal space so he will distance off. Somehow if he doesn't feel you embrace then he will pull you in again and cuddle and then it repeats over and over again until he would just hold you hand like Otters would
Armin: (dis is my baby xD) I feel like he likes to cuddle with his significant other and he gets cold easily so he would be the big spoon and cuddly with you. He might take up a lot of your blanket but he will try to give you some so your not too cold either.
Jean: Oh boy this guy. Okay he would be nagging about EVERYTHING in the beginning like "your pillows are too fluffy" or "your taking up all the blanket" and being a little bitch he is. But later on he will just be like screw it and just cuddle with you. (Of course he would be the big spoon)
Marco: He is the master of cuddling. Like when you guys cuddle at night it's like your bodies were built to fit together like damn he is the master of cuddles. And when you try to pull away to go to the bathroom or something he would just make a sad sound and pull you in closer with him because he is just that cute.
Connie: He is a child. He will not stay in one spot and he will squirm around and stuff. You guys will have just moments of being in each others embrace but that only lasts for like twenty seconds and off he goes moving around until you literally have to pin him down to the bed and sleep on top of him.
So yeah that's all I have right now because well I can't think straight right now and I can't fall asleep so might as well write right? But yeah if you guys would like me to do more of these then let me know. So yeah, see yah!