I just looked up fallen soldier over at yellow gremlin, and they are there, but not listed as being in Mor Dhona, and the ones I saw were Garlean. They are as I guess listed as undead. What would be cool is if when attacked "bitten" by them you loose control of your character and attack fellow party members.

http://ffxiv.yg.com/npc/fallen-soldier?id=3101804