Maskmen

The Maskmen are a Super Sentai team composed of six people originally recruited by Commander Sanjuurou Sugata to fight the Underground Empire Tube. They are the main protagonists of Hikari Sentai Maskmen.

Turboranger
Maskman joined up with Battle Fever, Denzimen, Sun Vulcan, Goggle V, Dynamen, Biomen, Changemen, Flashmen, and the Livemen, to stand behind the newest Sentai, the Turborangers, as they faced off against the Hundred Boma Tribes. Counting on You! Turboranger

Turboranger
Maskman joined up with Battle Fever, Denzimen, Sun Vulcan, Goggle V, Dynamen, Biomen, Changemen, Flashmen, and the Livemen, to stand behind the newest Sentai, the Turborangers, as they faced off against the Hundred Boma Tribes. Counting on You! Turboranger

Gokaiger
Years later, the Space Empire Zangyack invaded Earth. This threat was so great that all of the first 34 Super Sentai, including Maskman, were needed to oppose them. The 34 Sentai put up a valiant fight against the ground forces, but when the Zangyack fleet itself attacked them, Akarenger told everyone to combine their powers and save the Earth. This destroyed the Zangyack fleet and resulted in the loss of their powers, which resurfaced as Ranger Keys, that were dispersed throughout the universe.

The keys were collected by AkaRed, and later utilized by the 35th Super Sentai, the Gokaigers, a group of five people from different planets who came to Earth in search of the Greatest Treasure in the Universe. Ep. 1: The Space Pirates Appear The greater power of Maskman was initially taken by Basco ta Jolokia, but was granted to the Gokaigers by Akira after Basco's death. Ep. 49: The Greatest Treasure in the Universe After the Gokaigers finally defeated Zangyack, they returned the Ranger Keys before they left Earth to find the second Greatest Treasure in the Universe. It is presumbed the Maskmen got their powers back as with all the other Super Sentai. Final Ep.: Farewell Space Pirates

Super Hero Taisen
The Maskmen, among the majority of the Super Sentai heroes, were caught up in the "Super Hero Taisen" incident. They were presumably sent to the dimensional riftIcon-crosswiki, under the pretense of being defeated, by Kamen Rider Decade while he was apparently hunting the Sentai teams. When his and Captain Marvelous' ruse was revealed, Maskman appeared with the other Super Sentai through the dimensional wallIcon-crosswiki, they then fought alongside all the other Sentai teams and Kamen RidersIcon-crosswiki against the alliance of Dai-ShockerIcon-crosswiki and Dai-Zangyack. At one point, the Maskmen joined forces with Kamen Rider Black, as they protected Earth in the same year. They launched an attack against the revived Shadow MoonIcon-crosswiki. Kamen Rider × Super Sentai: Super Hero Taisen