The Justice Force

(This is on a world I've made up) In the year 2030, former justice league members: Superman, Batman(Jason Todd), Wonder Woman, and Flash(Bart Allen) as well as many other minor heroes to patrol cities, are all being controlled by Brainiac who is like the king of The United States. All other leaguers are either known to be dead or missing and in hiding. Any found person with a power either has to join their evil force or be killed. People wonder why the army doesn't do anything, it's because Brainiac and his "minions" will slaughter all that retaliate. However, the old leaguers and other heroes sidekicks and apprentices have formed a resistance. As a team of four heroes, they have sworn to avenge all the people who have been killed and to get back what the U.S. Used to be.