|This article is about a/an villain group in the Super Sentai series.|
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 invasion was 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.
During the events of Kamen Rider × Super Sentai: Super Hero Taisen, Captain Marvelous betrays the Gokaigers and takes over Zangyack as he assumes the title as their emperor and renames it "Dai-Zangyack" (大ザンギャック Dai Zangyakku?), formed from the remnants of the dissolved Zangyack Empire and the conglomeration of all Super Sentai villains, in order to take down the Kamen Riders to obtain their Great Powers, and the Dai-Shocker group led by Tsukasa Kadoya. However, Dai-Zangyack turns on Captain Marvelous and joins forces with Dai-Shocker to destroy Super Sentai and the Kamen Riders.
The Makuu Prison Chief Ashurada, a descendant of the former Makuu boss, Don Horror, conspired with Zangyack to use Gavan to catalyze the blood of Don Horror in his veins, which would make Makuu Space expand and consume the Earth. The Zangyack gave Ashurada whatever resources he needed for his plan, such as Gavan Bootleg, a robot warrior created from the combined technologies of the Zangyack and the Space Police, which replicated all of Gavan's abilities, along with an army of Gormin and Zugormin. This plot was eventually foiled by Gavan and the Gokaigers, who destroyed Asurada.