| Category | Heroes |
| World | |
| Race | Demon (Demon Lord) |
| Gender | asexual |
| Alignment | chaotic evil |
| Deity | none |
| Birthplace | unknown |
| Born | unknown |
In the Demon Spawn War (89 GE - 269 GE), Juiblex was taken out five times by Covenant forces. Ugly battles, many saw their armor, weapons, and bodies dissolved under Juiblex's attacks. Each time he was "killed", his psyche returned to the Abyss, taking over one of his mindless "buddings".
Juiblex's last battle of the Demon Spawn War was against a Covenant general named Melrith. Using a powerful staff called Eldacil's Vine, Melrith hoped to snuff out Juiblex's existence once and for all. A failed attempt, the side effects of this battle linger near Emeldimir and the Lightless Cyst.