Fishstick

The leader of the Sea Ninjas for a while, until Luka showed up. A walking-fish who, despite his villainy, was less ambitious and less murdery than his successor, Pearl the dolphin. To keep his head on his shoulders, he allowed himself to become a personal assistant of sorts when she took over, but when the Ninjas were defeated for good, he escaped Pearl's grim fate of becoming shark dinner.

It's unknown what he's up to now...