I must have completely missed the fact they were dwarves.

To me it would make sense that they were all human females, but I'm not sure what everyone else thinks. If Noah had a specific reason for dwarves, hopefully he sees this and will chime in.
I just looked at the Barbarian supplement. I personally don't use any of the class supplements, but esp. for Barbarians I also personally can't envision a dwarf barbarian. They have the strength, sure, but not the dexterity. Again, that's just me personally.