After the Source Wall was shattered,[2] four entities known as the Omega Titans began invading Colu, forcing Brainiac to summon the Justice League for help.

[3] Over time, Lex Luthor found a mysterious object related to an unknown force known as the Totality, while forging a new Legion of Doom, which includes a revived Brainiac and The Batman Who Laughs.

The Totality is presumed to be linked to Perpetua, an ancient goddess who was made to vanish by her three children, the Monitor, the Anti-Monitor and the World Forger.

[4] After faking his death through a bombing and with Perpetua's help, Luthor manages to transform himself into a human/Martian hybrid version of himself called "Apex Lex".

[5] Apex Lex recruits several supervillains to join Perpetua's cause, in exchange of giving them a source of unlimited power.