The Thanagarians is the people that live on the planet Thanagar. Their known for the discovery of defying gravity with the use of Nth metal found on their planet.
The Thangarians came to Earth posing as mankind's only hope against the Gordanians who were on their way to Earth in order to enslave it under their rule. Under this guise, the Thangarians planned to use a device that would both destroy the Earth and give the Thangarians access to the Gordanians home world, allowing them to once and for all destroy the Gordanians. After Batman found out their real plans, Hro Talek, the Thangarian commander, was forced to put the Earth and its defenses and communications offline while they built the supposed shield to protect the Earth. Only when Batman crashed the Watchtower into their "little science project" was the device destroyed, crushing the Thangarians hopes of taking over Earth.Hro Talek retreated with his men in order to find another planet to use in their hyperspace bypass project after realizing that Hawkgirl had fallen in love with Green Lantern John Stewart.
