Two-Face can take down the Justice League Judas Contract style using their individual dualisms as a Weapon.

The thread of dualism binds the current members of the Justice League. This could be used as an epic storyline similar to the New Teen Titans Judas Contract giving Two-Face the tools necessary to unravel the Justice League.

The Flash- Struggles between the fate that has bestowed upon him and changing that fate by creating a Flashpoint using his speed and the Speed Force.

The Batman- his dualism lies between his city of Gotham and his soul. Will his actions to protect his city ultimately cost him his soul. How far will it take him?

Jessica Cruz and Simon Baz- Their dualism lies between protecting their families from current social and political pressures and also protecting the ones that threaten their families as members of the Green lantern corps and the current protectors of Earth.

Wonder Woman- born in a Woman's world but now fully engulfed in the World of man. The ways of the Patriarchal World is still new to her. If she seeks out to be educated on their ways by a man will that man betray her?

Aquaman- Dualism between being an Atlantean and being a human. Living a normal life as an every day Joe on dry land and a King beneath the ocean.

Superman- Dualism between being born an alien and raised as someone that's very human. His dualism manifests when he uses his great powers which even scares his most ardent supporters and allies.

Cyborg- The dualism between man and machine, being and non-existence, American and African, Joy and Pain. Cyborg continues to struggle with identity. Two-Face will try to him him reconcile that fact and help him co-exist with joy and grief. Two-Face feels that he is the embodiement of Joy and Grief.

Corinthians 6:10: ” To have joy in trials is not to deny pain. It is to recognize the fact that they can exist together. They can co-exist