Gru's plan had succeeded mainly because of the existence of the 'Polluted World Seed.' The conditions for this thing's birth were extremely harsh.
First, there had to be some supremely evil existence that suddenly appeared in this world. Although the world had no self-awareness, it could still sense the existence of danger, and the World Seed would condense at that moment.
After the World Seed grew into a towering tree, it would bring changes to the lifeforms of this world, granting them the qualifications to deal with that supremely evil existence.
The supremely evil existence that had suddenly appeared in this world was the Ancient God in Doom Town. That Ancient God had neither destroyed the World Seed nor paid any attention to it.
Even so, the World Seed had still been polluted by the Ancient God's power and appeared inside Doom Town. Gru and his predecessors had used the 'Polluted World Seed' to carry out their plan.
This thing possessed both the characteristics of this world and powerful corrosive power. Once activated, it would affect the lifeforms of this world, turning them into the Wood Faction.
The Wood Faction's 'life characteristics' came from the World Seed, which was why their bodies were withered and they concentrated their vitality inside themselves. The Tree Giants were easier to understand—they had simply been more severely corrupted.
A normal World Seed would bring beneficial effects to lifeforms, while the 'Polluted World Seed' was a combination of good and evil.
Emperor Okaaz had also visited Doom Town and knew about the 'Polluted World Seed.' To guard against any mishaps, he had expended an exorbitant amount of resources to establish the 'Light-Dark Array' beneath the Imperial Capital, preventing anyone who obtained the 'Polluted World Seed' from attacking the Imperial Capital one day. The former Imperial