15 Greatest Justice League Villains Of All Time

8. Starro

Yet another alien conqueror (who, er, just so happens to look like a giant starfish), Starro shouldn't be taken lightly just because of his appearance. He's actually a very important part of Justice League history due to him being the first villain the League ever faced in the pages of Brave and the Bold #28, a moment which brought together the team of Aquaman, The Flash, Green Lantern, Martian Manhunter, and Wonder Woman.

Utilising mini starfish to take psychic control of the heroes who oppose him, Starro is actually a widely feared planet conquering warlord who has enslaved numerous galaxies, with Earth being the one planet which has consistently failed to fall before him thanks to the intervention of the Justice League. Still not convinced that he's a big deal? Well, it once took the combined might of the JLA and Avengers to take him down!