ive only gotten freakedout the first time one popped out of the little husk he had built around himself
He didnt build it, he grew it.
If you look closely, youll see that its the remains of a chaurus reaper.
Presumably they molt like butterflies and the reaper is the caterpillar.
*shiver*
What got to me were those huge bugs the Falmer constructed their tents out of.
First time I saw such a tent from afar in the dark I thought it was a live bug.