Black Zero is a rebel organization operating in Kandor City.
Black Zero operated on Kandor, seeking to disrupt the natural order. They sent a suicide bomber to the Lawmakers Guild, where he attempted to injure the Voice of Rao. However, he was stopped by Seg-El, before a Sagitari shot off his arm implanted with the bomb.
- "House of El" (mentioned)
- "The Rankless Initiative" (mentioned)
- "The Word of Rao" (mentioned)
- "Transformation" (mentioned)
- "Savage Night"
- "The Phantom Zone"