I have finished my new genetic breed, The Big Fat Norns, and you can download them from here. You will need the Cave Norn sprites available here at Norngirl's Temporary Storage Place for the breed to display properly.
Currently I am unsure if the breed is C3 compatible. Use this breed with C3 at your own risk.
Included is the .agent file, a care guide and two starter Norns named Fatty and Fatima. Enjoy!