Other than lacking names and physical bodies, which prevented them from remaining in the Axial World for long, they were troublesome to the extreme in both personality and ability.
More importantly, they had the means to cause trouble.
Other than those at the Pinnacle of the Pyramid, no one was their match.
Not to mention that they were in the "Netherworld." What kind of place was the Netherworld?!
It was the birthplace and home turf of Primordial Demons like them, a respawn point where they could revive directly after death.
Thus, the weak beings of the Axial World feared Primordial Demons to death, while the strong found them as irritating as stubborn bandages.
Take Leon, the Platinum Sword King, for example. His strength was in no way inferior to Carrera's. In fact, because he possessed an Ultimate Skill, his raw strength even surpassed Carrera at her peak.
However, once Carrera hid in the Netherworld, Leon did not dare pursue her.
There was no helping it! Everyone knew that Primordial Demons were immortal and indestructible beings, undead creatures that could not be completely killed, a species rejected by death.
The only beings comparable to Primordial Demons in this regard were True Dragons, natural disasters in living form.
Once a Primordial Demon died, she would return to the Netherworld, gestate anew, and be reborn.
Leon was not stupid. The Netherworld was not only Carrera's home turf, but also her respawn point.
All the Yellow-spectrum demons were in the Netherworld!
If he entered, he would only be ganged up on. He would not consider himself invincible just because he possessed an Ultimate Skill. If Carrera really ambushed him, he might not even be able to leave the Netherworld unscathed.
In a more serious case, it was entirely possible for him to die in