the Sonic Diver program at the Oppama Testing Facility. While Lt. Col. Togo outranks him, Lt. Hizuki's position in the program puts him above Togo. Unbeknown to the others, he is preparing the Sonic Divers to combat WORMs. He is an unsociable man who is not used to showing his true feelings giving him the appearance of a cold man. Lieutenant Hizuki's assistant until she is transferred with the Sonic Diver unit to the naval destroyer, Koryu. She collects and monitors Sonic Diver data. She is a reliable girl who is quick at her work. She is also shy and mousy but is known for having the largest breasts in the show. She was born on an island and has a younger sister named Hakashi and a childhood friend named Kurosawa Hiroharu whom they seem to have a mutual crush. A picture of her is featured every episode when advertising the sponsors. A kind boy who always smiles and gentle. He is the communications officer monitoring the Sonic Divers and any potential enemies. He helps out in the ship's galley as Chef Gen-san's assistant and enjoys photography as a hobby. He has a crush on Karen. The Sonic Diver specialist who work on Otoha's Reijin. He is a rough man and has a tendency to be a bit of a pervert, which Otoha scolds him for. He and Otoha develop a close bond, even though neither will admit it and they fight frequently. The two twin sisters are Sonic Diver mechanics. Ranko has pink hair, and is very outgoing and friendly, and is charged with maintenance on Eika's Raijin. Haruko has blue hair, a calm stoic demeanor and is in charge of Karen's Fujin. Chief Mechanic and supervises the other mechanics. Later he personally handles the maintenance on Elise's Sonic Diver, Bachstelze V1. Commander of the special naval destroyer no. 113, the Koryu. Second in command aboard Koryu. After experiencing the destructive capabilities of WORMs in the first war, he has serious doubts about the Sky Girls and the Sonic Diver program. Doctor aboard the Koryu. She is a widow and has a son. The Koryus Chef. He is a hard taskmaster, giving his assistant, Takumi Hayami, plenty of work to do. However, the Chef develops a fatherly relationship with Elise, often pampering her and preparing her favorite dishes. This is because Elise looks very like his granddaughter. Pilot of