How to Promote Nth Metal Characters — Upgrade Guide for Metal Cards

Nth Metal characters are the rarest and most powerful fighters in Injustice: Gods Among Us Mobile. Unlike Gold characters that use standard promotion materials, Metal characters require Valorium Alloy for upgrades. This guide covers everything you need to know about promoting Nth Metal characters efficiently.

What Makes Metal Characters Different

Rarity and Stats

Metal characters are the highest tier, sitting above Gold. They feature:

• Double base stats — 5,600 combined damage and health (vs 2,800 for Gold)
• Dark Power mechanics — unique special abilities with enhanced effects
• Exclusive upgrade path — require Valorium Alloy instead of character shards
• No Breakthrough access — capped at Elite VII and level 50 (vs Elite X and level 60 for Gold)

Upgrade Requirements

Metal character upgrades differ from standard promotions:

• Promotion — requires duplicate Metal character cards or Valorium Alloy
• Special abilities — cost both Power Credits and Valorium Alloy
• Passive upgrades — enhanced through evolution, not standard promotion
• Evolution — unlocks Dark Power specials (requires Elite III + maxed specials)

For a complete guide on unlocking Metal characters, see our Metal character guide.

How to Promote Nth Metal Characters

Promotion Materials

Metal characters use Valorium Alloy exclusively for promotion. Character shards cannot be used. Valorium Alloy is earned through:

• Phantom Zone events — primary source, awarded from crystal completions
• Special event rewards — occasional milestone rewards
• Store purchases — sometimes available for real money

Promotion Copies Required

Each promotion requires increasing numbers of the character:

Total: 43 copies (or 43 Valorium Alloy for direct promotion) to reach maximum Elite VII.

Direct Promotion vs. Duplicate Cards

You can promote using either:

• Valorium Alloy — direct promotion using the exclusive currency
• Duplicate cards — additional copies of the same Metal character

Valorium Alloy is generally preferred because:

• Duplicates are extremely rare and expensive
• You need 44+ copies of the same character, which is impractical
• Valorium Alloy can be farmed consistently through Phantom Zone

Valorium Alloy — How to Get It

Primary Source: Phantom Zone

Phantom Zone is the exclusive source of Valorium Alloy:

• Crystal completion — each powered crystal rewards 25-50 Valorium Alloy
• Boss defeats — additional alloy for defeating Phantom Zone bosses
• Event resets — can be reset twice per event for 50 Nth Metal each

Farming Efficiency

To maximize Valorium Alloy acquisition:

1. Complete all Elite crystals — highest difficulty grants the most alloy
2. Reset the event twice — costs 50 Nth Metal but doubles rewards
3. Participate in every Phantom Zone event — events run for 2 weeks, twice per month
4. Join an active league — league members can help power crystals faster

Alloy Allocation Strategy

Prioritize which Metal character gets Valorium Alloy:

1. Your main damage dealer — highest impact for progression
2. Solo raid specialist — characters like King of Atlantis Aquaman
3. Team anchor — characters with team-wide passives like Batman Ninja Batman

Spread resources across multiple Metal characters only after one is fully promoted.

Special Ability Upgrades

Upgrade Costs

Metal character special abilities require both Power Credits and Valorium Alloy:

Upgrade Priority

Focus on special abilities in this order:

1. Super Move — provides team-wide benefit
2. SP2 — usually the highest damage special
3. SP1 — support and utility effects

Evolution: Unlocking Dark Power

Evolution Requirements

To evolve a Metal character:

1. Reach Elite III (7 duplicate copies or 7 Valorium Alloy)
2. Max all special abilities (SP1, SP2, Super Move all at level 5)
3. Pay evolution cost — 250 Nth Metal + 250,000 Power Credits

Dark Power Benefits

Evolution unlocks powerful mechanics:

• Dark Power SP1/SP2 — enhanced special attacks with additional effects
• Passive upgrades — 5 additional passive enhancement levels
• Animated card — visual evolution upgrade

Dark Power Effects

Dark Power effects vary by character:

• Unblockable attacks — bypass opponent blocking
• Power drain — removes opponent's power bars
• Gear disable — permanently disables opponent's gear for the match
• Enhanced damage — significantly increased damage output

For example, Batman Ninja Catwoman's Dark Power SP2 has a chance to permanently steal opponent gear — one of the most impactful abilities in the game.

Efficient Progression Strategy

Step 1: Acquire One Metal Character

Focus resources on acquiring just one Metal character initially. Spreading efforts across multiple characters slows all progression.

Step 2: Promote to Elite III

Use Valorium Alloy to reach Elite III, the minimum for evolution. This requires 7 copies or 7 Valorium Alloy.

Step 3: Max Special Abilities

Upgrade all special abilities to level 5 before evolving. This is mandatory for evolution and maximizes the character's base effectiveness.

Step 4: Evolve

Pay the evolution cost to unlock Dark Power specials. The 250 Nth Metal investment pays dividends through enhanced abilities.

Step 5: Maximize Passive

Use the 5 additional passive enhancement levels for maximum stat boost and ability effectiveness.

Step 6: Full Promotion

Continue promoting to Elite VII using remaining Valorium Alloy. Each promotion increases star rating, level cap, and base stats.

Metal Character Priority List

Highest Priority

• King of Atlantis Aquaman — percentage damage for solo raids
• Batman Ninja Catwoman — devastating basic attacks, gear disable
• Metal The Batman Who Laughs — versatile tarot card effects

Medium Priority

• Black Adam/New 52 — Lightning Storm for team support
• Shazam/New 52 — power generation and damage boosts
• Nightwing/Batman Ninja — combo meter and team synergy
• The Merciless/Metal — armor generation and powerful specials

Lower Priority

• Ares/The Merciless Metal — strong but situational
• Other Metal characters based on team needs

Nth Metal Glitch and Acquisition

Legitimate Nth Metal Sources

Nth Metal is required for evolution and packs:

• Phantom Zone — 25-50 per crystal completion
• Online Battle — weekly season rewards (10-250 per week)
• Survivor Mode — prize wheel (25 per fight, chance-based)
• Store purchases — real money bundles

Avoiding Scams

Nth Metal glitches advertised online are typically scams:

• Fake generators — steal account credentials
• Video verification — always a phishing attempt
• Third-party sellers — often deliver stolen accounts

Only earn Nth Metal through legitimate in-game methods. For more on avoiding scams, see our modding shop guide.

Conclusion

Promoting Nth Metal characters is the most resource-intensive progression path in Injustice Mobile. Each promotion requires Valorium Alloy from Phantom Zone, and evolution demands 250 Nth Metal. Focus on one Metal character at a time, prioritize evolution after Elite III, and always max special abilities before evolving.

For earning the currencies needed for promotion, see our Nth Metal guide and Power Credits guide. For event details, read our Phantom Zone guide.