Jirou would absolutely do that “put the sleeping guy’s hand in water to see if he pees himself” thing to Kaminari
(he doesn’t, thankfully. Jirou is a little disappointed. Kaminari never finds out who did that to him)
Bakugou is not a morning person at all and the poor soul that tries to wake him up one day gets punched in the face. Bakugou is still asleep. he often kicks his blanket off in his sleep. is a very heavy sleeper
Iida sleeps in one position and one position only. the other kids try to move him into a different one one day and he will always go back into the position he was originally in. this fascinates the class.
Jirou sometimes plugs her earphones into her pillow when she feels scared at night, and listening to her heartbeat helps calms her down
Izuku mutters in his sleep. it’s just as disturbing as when he’s awake
Ochako chews on EVERYTHING b/c she’s used to starving herself to keep from eating and wasting money. some classmates have woken up to her chewing on their shirts/hair before.
Tokoyami sleeps with his covers over his head
Kouda sleeps with a nightlight. it’s bunny-shaped. he also sleeps with a stuffed animal.
Aoyama absolutely HAS to sleep with the covers on. even when it’s like 100 degrees he just can’t sleep without them on
Todoroki can’t sleep unless he’s on a tatami mat. but he is able to fall asleep when he’s near someone he’s comfortable with. this ends up causing some awkward situations with Izuku and Momo
Momo needs to sleep on super plush beds. she can sleep on lower-quality stuff, but she often tosses and turns and usually doesn’t sleep as well. she needs her cushy bed
Mina moves around a lot in her sleep and will accidentally punch or kick anyone close by. often kicks off her blankets
Sero prefers sleeping with thin blankets or without any. he doesn’t like feeling hot. has no fear and often sleeps with his feet hanging off the edge of the bed
Kaminari drools in his sleep. often. also snores. a hurricane could come and he still wouldn’t wake up.
Tooru is a cuddler and will cuddle against anyone who’s close by, regardless of who it is.
Tsuyu sleeps with 3 blankets on and curled up in a little happy froggy ball
Shouji sleeps with his limbs all splayed out and with a single blanket. prefers having a really big fluffy pillow
Kirishima both drools AND sometimes sleep punches people. will sometimes activate his quirk in his sleep and ruin his shirt
Satou is also a cuddler and always ends up hugging his pillow in his sleep
Ojiou sleeps with his tail wrapped around him like a cat and will curl up in a little ball. prefers sleeping with thin blankets. is a pretty light sleepr