I just realised something....Marcille slime attack was a callback to Ch1 where she mentioned the exact same thing (though with a different design) Thats kind of neat
That dullahan, even though it nearly killed Laius, it acted pretty much like an excited little kid getting a puppy. It wants to do fun stuff together but because of the room it kept bumping into everything XD
I remember Marcille's main research is to make her own dungeon. Now we know she has deep interest in ancient magic. Looks like both topics have something to do with her dream.
@Arcara Actually brain (mostly cow's brain) is a delicacy in my country. I hate the texture tho, so I prefer avoid them.