One thing I love about Dengeki Sentai Changeman are the villains, especially General Giluke and Queen Ahames. These are former leaders of their respective planets, planets conquered by the evil Bazoo and added to his Great Star League Gozma.
The pair refused to kowtow though and teamed up to try and overthrow the despotic space monster. They failed and now serve him as a means to protect their own lives while seething with hatred for the conqueror who ruined their homelands and essentially enslaved them to do the same to other worlds.
Bazoo still suspects them and refuses to allow Giluke and Ahames to work together to conquer the Earth even though the pair of them would likely be able to rather quickly. He wants to keep them totally separate in case they would try and betray him again and they would.
One of the reasons I think they hate the Changeman team so much is they see in them what they could never be, an actual resistance and threat to Bazoo. These five humans oppose his will and thwart Giluke and Ahames’ own plans for terrestrial conquest in ways the pair of rulers never could. Though they are still evil, I kind of sympathize with them as they are forced under threat of death or the destruction of their homeworlds, to serve a Master neither wishes to have anything to do with.
In fact, it seems no one has joined Bazoo willingly. Booba was a space pirate conscripted into Gozma and Sheema was a former Princess and future Queen roped into working for the League. It’s not a good way to run things when all of your underlings have reasons to hate you and want to see your downfall. Only Bazoos immense power and the threat he poses to entire planets keeps everyone from turning on him. It’s not a situation that can last forever.