Someone that could make all these high-level undeads so fearful must be the highest-level expert sent to the Hidden Dragon Continent to cooperate with Long Yan, the commander-in-chief of the undead army, General Sal.
Among the undeads, there was a strict division of ranks.
High-level undeads were naturally born in the world of the undead. They possessed the strongest death aura and could resurrect the dead and turn them into undead creatures.
Majority of low-level undeads were resurrected by these high-level undeads using resurrection curses. Their death aura was not strong, and as they were resurrected after their death, low-level undeads were quite slow-witted.
For undeads, high-level undead were the only purebred undeads.
As for the low and intermediate-level undead, they were merely appendages that they had extended.
The true core of the undead race was the high-level undeads.
