The Diabolu Idol-Head vs. Pandora's Box (Earth-3)

The Diabolu Idol-Head
Debut: 2000
Nemesis: Martian Manhunter
Other Major Foes: Zook
Appearances: 13+ comics
Powers: Contains countless monsters which it can summon on full moons.

Bio: The wizard Diabolu created the Idol-Head to cause destruction against the world he hated. Reopened in modern times, the idol began releasing supernatural threats on a routine basis until it was finally crushed by the Alien Atlas.

Pandora's Box (Earth-3)
Debut: 2012
Nemesis: Pandora
Other Major Foes: Justice Leagues, A.R.G.U.S., John Constantine
Appearances: A few dozen comics?
Powers: Causes extreme manifestations of the seven deadly sins in people within close proximity. Dimensional gateway to Earth-3.

Bio: Planted on our world from an opposing dimension of evil, this pseudo-equivalent to a Mother Box caused great hardship on Earth for millennia. It was destroyed by the Outsider to bring forth the Crime Syndicate.

Idol Speculation:
Pandora's Box was a highly sought after artifact, but technically, somebody has to find it and carry it around for it to do anything. The Diabolu Idol-Head, through unrevealed means, traveled extensively throughout the world, evading the Sleuth from Outer Space for over a year. The Idol-Head could theoretically escape from any harm Pandora's Box could generate, and even in the absence of human agents, the Idol-Head could unleash a destructive force upon the box once or twice a month of its own volition. That, or Ultraman's pee melts the Idol-Head, though Pandora's Box would already be obliterated to facilitate his presence.