Extra Final Boss

The **Extra Final Boss**, or the **Extra Final Boss Battle**, or **The Crown** was the former true final level of the old version of The One Billion Survivor and also was the former last level of the official Story Mode. It preceded Stage 8 and was only found in Extra Mode. The Extra Final Boss was also available in The True Arena, served as Round 20. Two variations of the Extra Final Boss are in Normal Mode and Hard Mode.

As of the new version of The One Billion Survivor, the extra final boss was replaced and toned down with parts of the final boss seen in the last level of Stage 8.

## Stage 8: Extra Final Boss Battle

### Difficulty

Extreme
Soul (Hard Extra)

### Power Crystals

1500
 2000

## Variations

The Extra Final Boss was much harder than the previous 8 extra stages after all the Fright Zone Challenges completed and all the other sub-games. This was removed in the new version of The One Billion Survivor, where the Extra Final Boss was replaced, toned down, and moved to the last stage of Stage 8 instead of being a completely independent level.

### Normal Extra Final Boss

The Normal Extra Final Boss was the level that the Underground Nation traps into another dimension.

#### Phase 1

At Phase 1 of the Normal Extra Final Boss, the boss would've made a dimension to a darker arena.

#### Phase 2

After Phase 1's normal defeat, the boss would resurrect himself to Phase 2. The only way to destroy the boss was to use Magic Destruction.

### Hard Extra Final Boss

The Hard Extra Final Boss is the variation level that the Underground Nation upgrades himself to the ultimate version of The One Billion Survivor, the Ultimate ThroneMaster Nation XX DX+ Soul. He is also the hardest boss, after Stage 8 EX.

#### Phase 1

Phase 1 of the Extra Final Boss was simple but much harder to destroy, his wings were darker than Star Dream Soul OS's and his magic is extremely strong. He is called the Ultimate Thronemaster Nation Prime.

#### Phase 2

Phase 2 of the Extra Final Boss was harder, the boss does the same way as Star Dream's second phase, except he fires fatal lasers, machine guns, and signal fire/ice pieces.

#### Phase 3

Phase 3 formerly reprogrammed the Extra Final Boss, he upgrades to the Ultimate Thronemaster Nation Prime 2. Instead of firing two lasers, he fires 24 lasers of his primary attack. He also shoots ink missiles at the player.

#### Phase 4

Phase 4's core is called Master Nation. Master Nation was a merged version of Void and Void Soul from Kirby Star Allies. He is the Chaos King remixed by the evil Dr. Victor 2.0.

#### Phase 5

This was formerly the game's true final boss. The ThroneMaster Nation transforms into an ultimate throne king, beating King Resistance and the Leading Corrupt Corporate Executive. Phase 5 is the final part of the final boss, he upgrades to the ultimate version, ULTIMATE THRONEMASTER NATION XX DX+ Soul, with a whopping 80 billion HP. As his health bar goes down to 40 billion, he has Void Termina's healthbar instead. The team powerup must destroy the Devilish shield in order to defeat the ThroneMaster. To make sure the player can safely attack, the player must wait until the boss fires 20 lasers, and cool down, but this will actually take a while as this boss battle after completing the whole game had 240 billion HP. This is probably the hardest boss battle, beating the Normal Extra Final Boss. Also, the ThroneMaster will explode once the boss is defeated. It is bigger than his defeat, and after that he will be absorbed, saving Barry's dance group.

### Finishing the Extra Final Boss

In the old version of The One Billion Survivor, finishing the Extra Final Boss battle with any of the Pump It Up crew members, would cause the player to get an immediate 100% save file. This could only happen if all the previous Stages were completed. Also, when finishing the level, the player unlocks two secret live performing videos, "Glitter Force Character Live Show" and "Glitter Force Character Live Show 2.0", in which these videos were made private.

### Nightmare Mode

Nightmare Mode was added in version 2.05. The difficulty had been raised in version 2.07. The difficulty had also been changed in version 3.01.0 by upgrading the true final boss to its highest limits possible.

## Trivia

* The Extra Final Boss was not included in The One Million Survivor, because of serious problems. This was fixed and added in version 3.0 of the lite version, with less health to make it easier.
* There were also changes when the Extra Final Boss is defeated before the features were either toned down or replaced entirely.
	+ When finishing this level as the XX Group, every last surviving Pump It Up character would leave, and will cause the player to get a 100% save file.
	+ The explosion is bigger and stronger after his defeat. This could only occur when finishing as most of the Pump It Up crew after destroying the boss battle after Phase 5.
	+ Also, when the player finishes a 100% file, the staff credits would be the same as The Haunted House: Secret of the Ghost Ball ending, but has 2 languages. First is in Korean, then to English. The staff credits would move on to Fight and Flight.
	+ Beating this level, will cause Erica, Lucy, Prima, Mari and Miya to get teleported back to Survival Land. This occured before the new release of Pump It Up.
	+ Finishing the Extra Final Boss, causes to unlock Pump It Up XX, Glitter Force and the 5 Minecraft Original Videos. This was removed due to the new version arrived.
	+ This has been changed since 3.02.0; it was moved to Stage 9 before it was removed entirely.
	+ The Hard Extra Final Boss is not included in Normal Story Mode once it was moved to Stage 8 EX nor The True Arena.
		- Incidentally, the Hard Extra Final Boss was added in version 2.01.0.