I read a bit of a theory actually, that made a bit of sense to me. Someone made the suggestion that maybe they have gender, because they're the souls of ancient kalos warriors in swords. Thought it was interesting, but wouldn't work because this is mystery dungeon...so we're just gonna go with because they're ghost types as well.
Also, on the subject of ghost type...just waiting for the moment an attack would hit him, and it just phases through.
Also, on the subject of ghost type...just waiting for the moment an attack would hit him, and it just phases through.