Which units would you like to replace/add?

These are living creatures, and they don't disintegrate. For example, there's a peasant, and there's a zombie. They look like the same creature, but both exist. Also, there are 4 types of dragons, and they aren't as different from each other as Ents and Ghouls. And bats, as far as I remember, have always been living creatures, but if you give them to the Dungeon faction, I think it would be pretty good.