| Category | Heroes |
| Location | Abyss |
| Race | Demon |
| Gender | male |
| Title | General |
| Alignment | chaotic evil |
| Deity | none |
| Birthplace | unknown |
| Born | ?? |
| Died | ?? |
In the Demon Spawn War, Siva'yah was a general to Demogorgon. In 8980 GE, in the northern tracts of Hells Womb, forces under General Siva'yah built the bastion Galstyxe.