Brainiac later arrived on Earth again and battled the Justice League, who proved no match for him and his ship, until Superman arrived. However, he did not come to destroy the Earth, but to deliver a warning: that there is a cosmic-level threat in the universe coming to Earth, one that the heroes of Earth are woefully ill-prepared for. Brainiac thinks he can defeat the threat, but it means teaming up with Superman and the Justice League and combining members of the League with some of the most dangerous supervillains in the DC Universe and sending them into battle against this extinction-level menace. Four teams outfitted with Brainiac's technology are formed (including among other members, Lex Luthor, Batman, Wonder Woman, and Sinestro), with Brainiac himself working directly alongside his nemesis, Superman.