| 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 vanquished five times by Covenant forces. The battles were gruesome, with many witnesses observing their armor, weapons, and bodies dissolving under Juiblex's assaults. Each time he was "slain," his psyche retreated to the Abyss, seizing control of one of his mindless "buddings."
Juiblex's final battle of the Demon Spawn War was against a Covenant general named Melrith. Utilizing a powerful staff known as Eldacil's Vine, Melrith aspired to extinguish Juiblex's being permanently. Despite this failed attempt, the residual effects of the confrontation persist near Emeldimir and the Lightless Cyst.