The science fiction series is a homage to the Super Robot shows of the 1970s and 1980s, executed with modern animation techniques and aesthetics. Set in the future, a giant fighting machine called the Aquarion is humanity's only effective weapon in the fight against the technologically advanced species called the Shadow Angels.
Aquarion aired from April 4, 2005 to September 26, 2005 on TV Tokyo. An alternate retelling of the television series, the Genesis of Aquarion OVA, premiered on September 15, 2007. The television series is licensed in North America by FUNimation while on the 14 February 2006 it aired on MTV Italia.
On April 27, 2009, the series made its North American television debut on the FUNimation Channel.
A sequel to the series titled Aquarion Evol (アクエリオンEVOL, Akuerion EVOL) was announced on February 25, 2011, to be in production.
Twelve thousand years in the past, mankind was at mercy of the mythical creatures known as Shadow Angels, immortal winged beings with overwhelming powers and technology. That is, until one of their kind, Apollonius, fell in love with a female human warrior, Seliane. Apollonius joins forces with the humans to free mankind from oppression, by using the legendary giant fighting robot Aquarion.