...I'm just trying to get inside your head.
- The vision in the opening chapter, in which the heroes fail to prevent a nuclear holocaust, leaving Superman floating alone in the void of space.
- Clayface and Scarecrow break into Green Arrow and Black Canary's apartment. Dinah is dosed with fear gas and hallucinates the coffee beans as insects, and Ollie is smothered by Clayface after the latter got close to him as Dinah.
- After defeating mind-controlled Batman and Alfred, Superman explains to a confused Captain Marvel that they were infected by microscopic worms. Then Supes looks at his own hand:Superman: Good Lord! They're in me, too...
- Wonder Woman's slowly, horrifically deteriorating condition after Cheetah's attack. At first it manifests as ugly, glowing scars, but when confronting Cheetah again in the Cities, all of Diana's skin is charred, with only a few burnt strands of hair clinging to her scalp.
- Giganta size-shifting.
- Bizarro's corpselike and silent appearance, especially when he's first seen almost completely in shadow except his glowing blue eyes. Word of God is that Alex Ross deliberately based the design off Samara Morgan from The Ring. Justice is a rare occasion where Bizarro isn't Played for Laughs, as it's shown how terrifying a grotesque parody of Superman with none of his humanity would be.
- Brainiac is a walking slice of nightmare fuel just by himself. Alex Ross's art provides perhaps the most unsettling depiction of Brainiac's "classic" appearance yet — his eyes have dark-greenish irises surrounding totally red pupils that glint in the dark (and are the subject of quite a few close-ups), and the red diodes in his head are glowing spheres that protrude from his skin, with little furrows emanating from the depressions. In personality, Brainiac is cold and outwardly unemotional, thinly veiling his sadism and hatred of organic life.
- Brainiac's introduction in the miniseries. After Aquaman is rendered unconscious and captured by Black Manta, he wakes Strapped to an Operating Table in a nightmarish operating theater, in which he sees first a monkey with a computer implanted into its skull, and then the mutilated corpses of gorillas, with their removed heads sitting on other tables... and then Brainiac, clad in bloodied surgical scrubs, wielding a surgical saw and intending to experiment on Aquaman's brain (see the page image). The sequence when Brainiac begins to cut into Arthur's skull, remaining cold and impassive all the while, is not something that can be easily forgotten.
- Grodd pulling a Mind Rape on Martian Manhunter to make him think he is not fire even though he is at the bottom of the ocean.
