To get Iron Billionaire in Universal Tower Defense Z, enter Crime Fighting Extraction, complete the Tangerine quest, defeat Red Skull until you get the Iron Billionaire unit and its evolution item drops, then extract successfully so the rewards are saved.
KEY!Iron Billionaire is tied to a full extraction run, so the unlock is not finished when the boss drops the reward. Your run only pays out when you escape through the extraction system and return safely.
Iron Billionaire requirements in Universal Tower Defense Z
| Requirement | Detail |
|---|---|
| Mode | Crime Fighting Extraction |
| Quest | Tangerine quest |
| Boss | Red Skull |
| Needed drops | Iron Billionaire unit and Iron Billionaire evolution item |
| Finish condition | Successful extraction after the drops are in your mission inventory |
Iron Billionaire is a Secret Light unit from Update 4.0, and its route sits inside Crime Fighting Extraction. Treat it as an extraction reward, not a normal banner summon.
How to unlock Iron Billionaire in Universal Tower Defense Z
Follow this route in order so the unit and evolution item both count when the mission ends.
STEP 1/7
Enter Crime Fighting Extraction
Load into Crime Fighting Extraction, the objective-based mode used for the Iron Billionaire farm.
STEP 2/7
Complete the Tangerine quest
Follow the mission objectives until the Tangerine quest is marked complete.
STEP 3/7
Go to Red Skull
After the quest is done, head toward the boss area for the Red Skull fight.
STEP 4/7
Defeat Red Skull
Beat Red Skull to roll for the Iron Billionaire rewards.
STEP 5/7
Farm both drops
Keep running Red Skull until you have one Iron Billionaire unit and one Iron Billionaire evolution item in mission inventory.
STEP 6/7
Wait for extraction
Once both rewards are secured, wait for the helicopter or extraction vehicle to arrive.
STEP 7/7
Move to the extraction point
Go to the green extraction point and finish the escape so the rewards are added to your account.
Video help
Iron Billionaire drop rates and farm targets
| Reward | Drop |
|---|---|
| Iron Billionaire unit | 25% from Red Skull |
| Iron Billionaire evolution item | 25% from Red Skull |
The unit and the evolution item are separate drops, so pulling one does not complete the farm by itself. Early player numbers put both drops at 25%, so use that as the farming expectation rather than a promise for any single Red Skull clear.
Do not leave after the Red Skull drop screen; check that both Iron Billionaire rewards are in mission inventory, then extract before ending the run.
How extraction saves Iron Billionaire
After the drops are in your mission inventory, stay in the run until the extraction sequence becomes available. The game may point you toward a marked extraction point, and some runs describe the end marker as a green extraction point.
Mistakes that waste Iron Billionaire runs
The biggest mistake is leaving the mission before extraction, because the run has not paid out yet. Another common waste is stopping after only the unit drops, then realizing the Iron Billionaire evolution item still has to be farmed separately.
Also avoid treating Iron Billionaire as a summon target. The route is Tangerine quest, Red Skull, both drops, then extraction.
Frequently Asked Questions
Can you keep Iron Billionaire if you leave before extracting?
No. If you leave before a successful extraction, the mission rewards are not permanently added to your account.
Do you need both the Iron Billionaire unit and evolution item?
Yes. The unit gives you Iron Billionaire, while the evolution item is a separate reward needed for its evolution path.
Is Iron Billionaire from summons or Crime Fighting Extraction?
Iron Billionaire comes from Crime Fighting Extraction. It is not a normal banner summon unit.
What boss drops Iron Billionaire?
Red Skull is the boss you farm after completing the Tangerine quest.
Is the 25% drop rate guaranteed?
No. A 25% chance means each reward can still take multiple Red Skull clears, and the unit drop does not force the evolution item to drop with it.
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