|4-D (on the left)|
Lea Corben was one four soldiers that General Eiling experimented on. The soldiers gained superpowers hence Lea became 4-D. Elling tricked the four to attack the JLA. The quartet nearly killed them until Superman revealed Eiling had a brain tumor and the four were dying due to their powers. 4-D and her three teammate teamed with the JLA to fight Eiling. She later helped form the International Ultramarine Corps.
Powers and Abilities
4-D can access other dimensions. Via accessing the second dimension, she can be as flat as paper. By accessing the energies of the fourth dimension, she can give herself super strength.