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A Promethium Lockbox is a legendary box item dropped randomly by any enemies or players defeated by the player in any instance once they reach level 10.

With each lockbox made from Depleted Promethium, a metal invented and patented by Steve Dayton of Dayton Industries, the lockbox can only be opened through the use of specialized "keys" that contain a chemical known as Volatile Promethium that can eat through the lock.

Starting April 3rd, 2012, once opened the player will be rewarded with a unique consumable item or armor style piece that can only be found within Lockboxes. Due to the unstable nature of Promethium, the player will have 30 days to open a Lockbox before it degrades beyond use. The box's status can be checked by checking the tooltip on the Lockbox in the inventory.

Game update 26 reorganized the content to be found in lockboxes completely. Now style items and exclusive base items will be contained.

Additionally a Mark of Victory can be found in each box.

Since Hotfix 22/07/15 Promethium Lockboxes feature a Loot Picker, as well as the first time faction-only vendor styles can be obtained cross faction.

Since Hotfix 22/07/21 Promethium Lockboxes do not drop for players with a free or premium account anymore.


Item List[]

Name Item Rarity
Blue Aura Accessory Legendary
Dark Blue Aura Accessory Legendary
Gold Aura Accessory Legendary
Green Aura Accessory Legendary
Purple Aura Accessory Legendary
Red Aura Accessory Legendary
Slim Blue Aura Accessory Legendary
Slim Dark Blue Aura Accessory Legendary
Slim Golden Aura Accessory Legendary
Slim Green Aura Accessory Legendary
Slim Purple Aura Accessory Legendary
Slim Red Aura Accessory Legendary
Slim White Aura Accessory Legendary
White Aura Accessory Legendary
Compound Omega Consumable Legendary
Proto Bank-Bot Consumable DLC
Proto Broker-Bot Consumable DLC
Proto Mail-Bot Consumable DLC
Proto Repair-Bot Consumable DLC
Vault Ticket Consumable Uncommon
Batgirl's Cape Style Legendary
Belt of the Daring Vigilante Style Legendary
Belt of the Lethal Zealot Style Legendary
Belt of the Master Mercenary Style Legendary
Belt of the Stalwart Defender Style Legendary
Boots of the Daring Vigilante Style Legendary
Boots of the Lethal Zealot Style Legendary
Boots of the Master Mercenary Style Legendary
Boots of the Noble Warrior Style Legendary
Boots of the Stalwart Defender Style Legendary
Chestguard of the Daring Vigilante Style Legendary
Chestguard of the Noble Warrior Style Legendary
Chestguard of the Stalwart Defender Style Legendary
Chestplate of the Master Mercenary Style Legendary
Cowl of the Daring Vigilante Style Legendary
Crown of the Noble Warrior Style Legendary
Cybernetic Belt Style Legendary
Cybernetic Boots Style Legendary
Cybernetic Breastplate Style Legendary
Cybernetic Gauntlets Style Legendary
Cybernetic Helmet Style Legendary
Cybernetic Legplates Style Legendary
Cybernetic Shoulder Plates Style Legendary
Gloves of the Daring Vigilante Style Legendary
Gloves of the Lethal Zealot Style Legendary
Gloves of the Master Mercenary Style Legendary
Helm of the Master Mercenary Style Legendary
Leggings of the Daring Vigilante Style Legendary
Leggings of the Lethal Zealot Style Legendary
Leggings of the Master Mercenary Style Legendary
Legguards of the Noble Warrior Style Legendary
Legguards of the Stalwart Defender Style Legendary
Mask of the Lethal Zealot Style Legendary
Pauldrons of the Master Mercenary Style Legendary
Tunic of the Lethal Zealot Style Legendary
Name Item Rarity
Amethyst Hookah Base Item Epic
Angel of Justice Statue Base Item Epic
Antique Defender Carving Base Item Epic
Antique Diving Suit Base Item Epic
Antique Philosopher Carving Base Item Epic
Antique Rogue Carving Base Item Epic
Antique Warrior Carving Base Item Epic
Antique Wise Man Carving Base Item Epic
Astronomy Armillary Sphere Base Item Epic
Blind Justice Statue Base Item Epic
Blue Crystal Sample Base Item Epic
Brushed City Landscape Base Item Epic
Brushed Classic Landscape Base Item Epic
Brushed Hospital Landscape Base Item Epic
Brushed Stylish Landscape Base Item Epic
Butcher Block Base Item Epic
Coral Pillar Base Item Epic
Easter Island Statue Base Item Epic
Egyptian Anubis Statue Base Item Epic
Fortune Teller Table Base Item Epic
Green Crystal Formation Base Item Epic
Guillotine Base Item Epic
Heart of Avarice Crystal Base Item Epic
Humble Antique Statue Base Item Epic
King's Throne Base Item Epic
Large Warrior Statue Base Item Epic
Mammoth Display Base Item Epic
Mystical Night Stand Base Item Epic
Ornate Boat Landscape Base Item Epic
Ornate River Landscape Base Item Epic
Palatial Woman Portrait Base Item Epic
Peace Defender Statue Base Item Epic
Peasant Woman Statue Base Item Epic
Pharaoh Statue Base Item Epic
Plesiosaur Display Base Item Epic
Pterosaur Display Base Item Epic
Rockin' Scooter Base Item Epic
Sabertooth Tiger Display Base Item Epic
Sarcophagus Altar Base Item Epic
Standing Angelic Statue Base Item Epic
Standing Queen's Sarcophagus Base Item Epic
Terracotta Warrior Base Item Epic
Tranquil Sand Garden Base Item Epic

Additional Styles[]

Additionally account bound single style items for the following costume style sets may be contained:

Adaptive Android, Aegis of Azarath, Aegis of Eternity, Aerial Defender, Aeronaut, Alien Tech, Angelic, Antifreeze, Archangel, Archer, Avatar Bombardier, Avatar Infiltrator, Barbarian, Biker, Biomech, Blood Bat, Bulwark of Madness, Contemporary Tech, Dark Specter 2018 Batsuit, Dark Specter Batsuit, Demonic, Divine, Dresden 7, Druid, Egyptian, Egyptian Sorcerer, Elemental Android, Fate's Faith, Formal, Fourth World, Frozen Fury, Gadgeteer, Gotham Knight, Greco-Roman, Heartshard, Hera's Strength, Hijacked Servitor, HIVE Defender, House of El Warsuit, Insectoid, Jah Kir, Jester, Joker's Punchline, Kabuki, Kryptonian Commander, Kryptonian Medico, LexCorp, LexCorp Salvation, Malevolent Knight, Mayan, Medieval, Mercenary's Malice, Metallo's Maw, Necromancer, New Genesis, Nth-Metal Battlesuit, Oolong, Paramilitary, Phantom Zone Reaver, Plant, Psycho, Punchline, Raptor Infiltrator, Raptor Tech, Rapture, Remora, Retro Tech, Schoolyard, Seraph, Shaman, Shielded Robot, Shroud of Anubis, Snake, Speed-Force Spectrum, Split Personality, STAR Ex, Steampunk, STEELsuit MK-1, Sunstone Bulwark, Sunstone Edge, Talon Lord, Tech Ninja, Vengeance, Vengeance of Hecate, Vengeful Surgeon, Viking, Virtuous Knight, Voodoo, Winged Fury, Wizardly, Zonewalker

Former Items[]

Game update 26 brought a complete revamp of the contents of Promethium Lockboxes. Formerly the boxes contained legendary low level gear and legendary tier 1 to tier 4 rings and necklaces.

For an overview of those please see Promethium Lockbox - Former Items.

Gallery[]

Trivia[]

  • This item was phased out with game update 116.
  • While players with Legendary Membership have an unlimited supply of keys to open Lockboxes, players with Free or Premium Access will have to purchase a Promethium Key from the Marketplace from April 10th, 2012, onwards to open them which originally cost $2.50/250 Daybreak Cash and a bundle of 5 cost $10/1000 Daybreak Cash. As of Game update 82, a Promethium Key costs $0.80/80 Daybreak Cash and a bundle of 5 cost $3.20/320 Daybreak Cash. Also featured in game update 82, Promethium Lockboxes will now drop more frequently. Free and Premium players will now receive a lockbox between 1 and 4 hours of play, and Members will now receive a lockbox between 1 and 2 hours of play.
  • When Promethium is alloyed with Titanium and Vanadium, it forms a near-invulnerable metal.
  • The bionic and cybernetic components of Cyborg are made out of Depleted Promethium. Deathstroke's mesh armor, sword and staff are also made of Depleted Promethium.
  • Volatile Promethium is also capable of generating near-limitless amounts of energy and can be used as a power source for many gadgets. Volatile promethium is also a dangerous mutagen that can be used to mutate living beings or trigger their metagene.
  • As of July 2015 a search in the Daybreak Games Census Data reveals 12 different item IDs for Promethium Lockboxes.
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