Krelix

 was the leader of the Sea Devil colony. He was a Bioengineer and created Silurian-Sea Devil Hybrids, but his work was deemed unethical. When Jo Jones came to broker a peace he told her of his works and that he believed Jastrok wanted the hybrids. He believed that once Jastrok attacked the human a peace between the species would haven't. When the base started to break up he saved Jo from drowning by placing her back in her submersible. He told her of a control device for the hybrids. (AUDIO: Tidal Wave)