During the 2009–2010 "Blackest Night" storyline, both JSA teams gather in Manhattan to stave off the invading Black Lantern Corps. Several of the team members examine the corpses of Kal-L and Psycho Pirate, both of whom had been reanimated as Black Lanterns only to be killed again during a battle with Superboy and Superman. Karen breaks down in tears upon seeing the twisted corpse of Kal-L, and swears vengeance upon whoever is behind the creation of the Black Lanterns. While on her way to the streets of Manhattan to assist her teammates, Karen hears Ma Hunkel screaming. She rushes to her side, only to see Ma being attacked by the Black Lantern Lois Lane-Kent of pre-Crisis Earth-Two. Black Lantern Lois sacrifices herself by removing her ring and giving it to Kal-L to reanimate him. During the battle between Kal-L and Power Girl, Mr. Terrific invents a machine to destroy the Black Lanterns. He activates the machine and it wipes out the Black Lantern ring connection and Kal-L and completely dissolves Kal-L's corpse.