Britta is also available at http://www.project-human.com/. I poked around in the forums there a bit (it's a very interesting effort) and found a spin-off called Z-Girl at http://www.dadhop.netfirms.com/. There is a mention by DAD in the Project-Human forums about a Z-Boy; but I didn't see it on his site. Might be worth asking about.