Space Empire Zangyack

The Space Empire Zangyack (宇宙帝国ザンギャック, Uchū Teikoku Zangyakku^?, ) are the fictional antagonists of the thirty-fifth Super Sentai Series Kaizoku Sentai Gokaiger, that battle the Gokaigers in order to invade and conquer the Earth.

Zangyack's forces are a race of aliens who have conquered and destroyed untold numbers of planets across the galaxy and plan to invade Earth for their emperor Akudos Gill. The first invasion failed due to the interference of 34 Super Sentai teams in the Legend War (レジェンド大戦, Rejendo Taisen^?). The second, current, invasion is being overseen by the emperor's son Warz Gill from his chariot-like flagship Gigant Horse (ギガントホース, Giganto Hōsu^?), stationed between Earth and its moon, with an armada at his command. After the Gokaigers killed off Warz, the Zangyack made the capture and execution of the Gokaigers their top priority to the point of giving Captain Marvelous an "Unlimited Reward" bounty. They were perceived a threat great enough for the emperor himself to come and oversee the invasion personally. A month after Akudos Gill's death as well as the destruction of the majority of their military forces, which were mobilized to Earth, the Zangyack Empire begins to dissolve with its universal reign coming to an end.

...
Wikipedia