Metal characters represent the pinnacle of power in Injustice: Gods Among Us Mobile. Introduced in update 3.2, these elite fighters feature unique Dark Power mechanics, devastating passives, and stats that surpass even the strongest Gold characters. This guide covers everything you need to know about unlocking and upgrading Metal characters.
What Are Metal Characters?
Metal characters are the highest rarity tier in Injustice Mobile, sitting above Gold. They are distinguished by their unique Dark Power mechanics and significantly enhanced stats. Metal characters feature:
- Dark Power specials — enhanced versions of special attacks with additional effects
- Superior base stats — higher health and damage than equivalent Gold characters
- Unique passives — powerful abilities that often define team strategies
- Exclusive upgrade path — require Valorium Alloy instead of standard promotion materials
How to Unlock Metal Characters
Nth Metal Packs
The primary method for obtaining Metal characters is through Nth Metal packs. These packs guarantee at least one Gold character with a chance for Metal characters. Nth Metal packs are purchased with Nth Metal currency. For more on earning and spending Nth Metal, see our Nth Metal guide.
Phantom Zone Events
Phantom Zone is a limited-time event that rewards Nth Metal and Valorium Alloy. Completing Phantom Zone trials unlocks boss fights, and defeating bosses rewards character shards — including Metal characters. The event can be reset twice for 50 Nth Metal each, providing additional shard opportunities. Our Phantom Zone guide covers strategies and rewards in detail.
Challenge Mode
Some Metal characters are available as Challenge Mode rewards. Completing a full challenge unlocks the featured character. Even partial completion rewards a Bronze Booster Pack and Power Credits. See our Challenge Mode guide for event schedules and requirements. Challenge characters unlocked this way can be promoted directly using Power Credits — see our character promotion guide for costs.
Nth Metal Store
The Nth Metal store offers specific Metal characters for direct purchase using Nth Metal currency. Stock refreshes regularly, providing opportunities to acquire specific Metal characters.
Special Bundles
Warner Bros. periodically offers bundles containing Metal character shards. These bundles are available for real money or Nth Metal and often represent the fastest way to unlock specific Metal characters. For spending guidance, see our Power Credits guide.
Valorium Alloy — Metal Character Currency
What Is Valorium Alloy?
Valorium Alloy is the exclusive currency for upgrading Metal characters. It is used for:
- Promotions — increasing a Metal character's star rating
- Special ability upgrades — enhancing Dark Power specials
- Passive upgrades — improving passive ability effects
How to Earn Valorium Alloy
Phantom Zone is the primary source of Valorium Alloy. Completing trials and boss fights rewards significant amounts of alloy. Higher difficulty tiers yield more alloy per completion.
Events and challenges occasionally reward Valorium Alloy as milestone rewards.
Special bundles sometimes include Valorium Alloy alongside character shards.
Dark Power Mechanics
What Is Dark Power?
Dark Power is a unique resource exclusive to Metal characters. It accumulates through specific gear and support cards and is consumed when using enhanced special attacks.
How Dark Power Works
Metal characters have access to Dark Power versions of their special abilities:
- Dark Power SP1 — enhanced first special with additional effects
- Dark Power SP2 — enhanced second special with devastating effects
- Dark Power Super — enhanced super move with maximum impact
Dark Power effects vary by character. Examples include:
- Unblockable attacks — cannot be blocked by opponents
- Power drain — removes opponent's power bars
- Gear disable — permanently disables opponent's gear for the match
- Enhanced damage — significantly increased damage output
Accumulating Dark Power
Dark Power is accumulated through:
- Gear effects — certain gear grants Dark Power on specific triggers
- Support cards — some cards generate Dark Power
- Passive abilities — certain Metal characters generate Dark Power passively
Upgrading Metal Characters
Promotions
Metal characters are promoted using Valorium Alloy instead of character shards. Each promotion:
- Increases the character's star rating
- Raises the maximum level cap
- Boosts base health and damage stats
- Enhances passive ability effectiveness
See our Metal characters upgrade guide) for full promotion costs and requirements.
Special Ability Upgrades
Dark Power specials can be upgraded to increase their effects:
- Damage increase — higher base damage for specials
- Effect chance — higher probability of Dark Power effects triggering
- Duration increase — longer-lasting effects
Passive Upgrades
Metal character passives can be upgraded to improve their effects:
- Damage reduction increase — higher damage reduction percentages
- Effect duration — longer-lasting passive effects
- Trigger threshold — easier activation conditions
Best Metal Characters
Batman Ninja Catwoman
One of the most powerful Metal characters, her Cat Rage passive grants massive basic attack damage and power drain on every hit. She can demolish entire teams alone and becomes nearly unstoppable with her Batman Ninja teammates. Her Dark Power specials can steal opponent gear permanently. For full details on her abilities and gear, see our Batman Ninja Catwoman guide. For a full breakdown of her abilities and gear, see our Batman Ninja Catwoman guide.
King of Atlantis Aquaman
A percentage damage dealer who shaves off 30% of a solo raid boss's health when triggering his third special ability three times. He is often the first Metal character players build and remains essential for solo raid content.
Other Notable Metal Characters
Metal characters span multiple teams and roles, each bringing unique advantages to specific game modes. The best Metal character depends on your team composition and preferred playstyle.
Tips for Metal Character Progression
Focus on One Metal Character
Metal character upgrades require substantial resources. Spreading Valorium Alloy across multiple Metal characters slows progression. Focus on one Metal character and maximize its potential before moving to the next.
Prioritize Phantom Zone
Phantom Zone is the most reliable source of both Nth Metal and Valorium Alloy. Complete it every time it is available to accumulate resources for Metal character progression.
Build Synergy Teams
Metal characters often have passives that benefit teammates. Building teams around Metal character synergies maximizes their effectiveness. The Batman Ninja team, for example, becomes significantly stronger with multiple members.
Upgrade Dark Power Specials First
Dark Power specials provide the most significant power increase for Metal characters. Prioritize upgrading these over standard stat boosts for maximum impact.
Conclusion
Metal characters are the ultimate power in Injustice Mobile. Unlocking and upgrading them requires dedication — Nth Metal for acquisition, Valorium Alloy for upgrades, and Phantom Zone participation for both. Focus on one Metal character at a time, prioritize Dark Power special upgrades, and build synergistic teams to maximize their potential.
For more on earning Nth Metal, see our Nth Metal guide. For Phantom Zone strategies, read our Phantom Zone guide. For team building with Metal characters, see our Batman Ninja Catwoman guide.