Eclipso returns after several years' absence in the "Princes of Darkness" storyline in "JSA" as an ally of the other villains Mordru and Obsidian. Alexander Montez, cousin of Wildcat II, vows revenge on Eclipso for her death. To this end, he gathers the 1,000 black diamonds, liquefies them and injects them into himself; all save one, which he keeps to evoke Eclipso. Exactly how Eclipso's diamonds had returned was unknown. Montez covers his body in tribal tattoos he claims he had learned about on Diablo Island. With these tattoos, Montez can summon all the powers of Eclipso by triggering the diamond with his anger, while remaining in control of himself and keeping Eclipso trapped within. As the new Eclipso, he joins the short-lived team of loose-cannon heroes assembled by Black Adam, which was the subject of the subsequent storyline "Black Reign".