is an anime television series, produced and animated by XEBEC, and directed by Seiji Mizushima. It aired from October 5, 1999, to March 28, 2000, on TV Tokyo, running for 26 episodes. 6 volumes of videos were released on VHS and DVD. The series also had a very brief run (two episodes) on Cartoon Network through Toonami's "Giant Robot Week".
The series is based around three office workers of the 21st Century Defense Security Corporation's Public Relations Division 2 who, with the company's giant robot, Dai-Guard, fight interdimensional alien beings called "Heterodynes". Unlike most giant robot anime, Dai-Guard performs on much more realistic physics, making it heavy, slow, and difficult to control. Also, the Heterodynes seem to be the least of the 21st Century Corporation's problems as they experience opposition in the form of massive damage claims, lawsuits, rivals and a jealous and antagonistic military who wishes to take back Dai-Guard for themselves.
Plot
On February 24, 2018, in the Northwest gap of the Sea of Japan, a giant creature called a Heterodyne appears and goes on a rampage, destroying a major city and killing countless people before being destroyed itself by a weapon of mass destruction known as an "O-E (Over-Explosion) bomb". In the aftermath, a giant robotic weapon system, code-named Dai-Guard, was developed for the military by the 21st Century Defense Security Corporation as an alternative to the future use of such weapons.
However, no further attacks occur for the next twelve years and the 21st Century Corporation is allowed to keep the useless weapon as a mascot which is managed by Public Relations Division 2. However, during a security exposition in 2030, a Heterodyne attacks and the ill-prepared and unarmed robot is taken into battle by its pilot Akagi Shunsuke. His headstrong nature, combined with the talents of his fellow crew, enable Dai-Guard to be victorious against multiple Heterodyne attacks causing the military to want it back.
Heterodyne are mysterious entities formed from dimensional quakes all around Japan and are attracted to electromagnetic hot spots. Crystalline hexagons called Fractal Knots act as their nucleus, and they form bodies using the matter around them. Although Fractal Knots replicate themselves indefinitely, if the original is destroyed it will immediately reduce the rest of the body into ethanol. The Heterodyne are dangerous and adaptable yet not invulnerable. They are a threat that must be faced in a dangerous world like typhoons, earthquakes or tsunami. Each one has a different physical appearance and behaviour.
Much of the series concerns the conflict between the Corporation with its office politics, profit driven, bureaucratic nature and staff beliefs, and the Anzenhosho Army (ANPO) with its adherence to protocols, procedures and concern for its public profile. Both the Corporation and the Army have people who are more concerned with ambition and status than the need to serve and protect the population. A strong theme within the story is the need for cooperation between talented individuals to achieve a common goal.
Characters
Shunsuke Akagi
The primary pilot of Dai-Guard. The headstrong, idealistic and impulsive, 25-year-old Akagi can be seen as the heart and brawn of the three Dai-Guard pilots. Beforehand, he was merely an office worker for the 21st Century Defense Security Corporation, but he manages to achieve his dreams of becoming a "Giant Robot pilot". During the return of the Heterodynes, he and his two friends Ibuki and Aoyama become the pilots of Dai-Guard and intend to put it to use in order to fight off the Heterodyne threat. Akagi loves his job a little too much and manages to stick out among his fellow workers as the more enthusiastic one. Akagi always has the best intentions, even though they usually get him into trouble. Intriguingly, his distinctive personality makes him a natural as Dai-Guard's primary pilot and his cartoon-samurai ethical code quickly wins him a place in the hearts of the public. He refuses to take or allow actions that will endanger civilian lives and/or property if there is any alternative whatsoever. Ibuki Momoi