One of the Advena Avis immortals. On the Advenna Avis, he saves Sylvie from Szilard.

After becoming immortal, he begins to visit various battlefields in order to not forget the meaning of death but ends up desensitized to it instead. Nile is easily provoked into violence and starts most of his sentences with "I say this." He wears a mask around his face that he claims is to prevent himself for being accidentally devoured and consequently dying in an ignoble fashion.

In 2001, he joins Maiza, Czeslaw and Sylvie on their search for Elmer in a strange European village. Later, he helps Sylvie and Elmer search for Denkuro in Japan where they receive an invitation from Huey to board a cruise ship bound for the United States.