Board Thread:General Discussion/@comment-5691575-20130428005808/@comment-6881629-20130802112657

Ermm Mjoll is essential, and being launched by a Giant can kill protected followers (the hit and then the fall does it i think) although it is more likely that its you that finish protected npc's enemies with aoe attacks and poison can kill them when there crawling on the floor. Cicero is only essential during parts of the DB quest line i think when he's a follower he's back to being just protected (and oddly a little taller).