Nisa Trusswood was an animal caretaker who became leader of the Fish of Magic in 90. All he's ever done is rip Cacame's lower body in 97. His father was somewhat of a badass, having 5 kills to his name before being killed.
Nithe fought and wounded a cyclops before being driven off. She confronted Cacame, then was killed by a Sibrek. Sibrek is in fact a member of the Creation of Ferns (Cacame's civilization). She has 4 kills, including one of the amusingly named "Lafi Seasontrussed the Natural Bust-Bowel of Ambiguity".
The Fish of Magic are the other local elven group next to the Creation of Ferns. After the Oily Typhoon was defeated (they were Cacame's original elven group), the Fish of Magic became the main protagonists. They were both members of the Field of Kindling civilization.
As a random side note, I entertained myself on City of Villains this evening making a mock-up of Cacame, complete with his colossus-style purple war hammer. ^_^ Though not nearly as epic as the original, he's already running around killing things in single hits.
Cool, I'd like to see a screen shot and see how you envisioned him. I tried making him heroside on Virtue, but couldn't come up with a costume that I thought looked cool enough.