Gern was the architect of the Afterterrors.
Gern is a leader in the army that attacks Rockback Valley.
Together with the other members of the Six, Gern leads all of the Lords of Prey against the rabbits in the Siege of First Warren. He is killed along with one of his compatriots by either Jo Shanks or Helmer.
Gern is a brown eagle with a splash of white showing around the edges of his black helm. He wields a short sword and a spiked hammer.