Duke Orcus — runescape

Duke Orcus the Necromancer was the commander of the Third Legion in the army of Zaros, and one of the twelve Chthonian dukes given to Zaros by Hostilius.^[1]

Trivia

Orcus features in Mod Jack's comic The Empty Throne as being present during Zamorak's betrayal. He is depicted as a very tall, concealed creature.
Orcus translates to "death" or "underworld" in Latin, the real-world language from which the infernal language is derived. In Roman mythology, Orcus was the god of the Underworld.
Mod Jack suggested on Twitter that Nechryael are the spawn of Duke Orcus.^[2]
Orcus is the name of the Demon Prince of Undeath in the table top roleplaying game Dungeons & Dragons.

References

^ Mod Rowley. "Ancient Combat FAQ." 28 May 2014. Recent Game Updates Forums.
^ Jagex. Mod Jack's Twitter account. 23 June 2014. Mod Jack: "In my system the Nechryael are definitely Chthonians. I have them specifically as the spawn of Orcus. That's not canon yet though."

[1] Mod Rowley. "Ancient Combat FAQ." 28 May 2014. Recent Game Updates Forums.

[2] Jagex. Mod Jack's Twitter account. 23 June 2014. Mod Jack: "In my system the Nechryael are definitely Chthonians. I have them specifically as the spawn of Orcus. That's not canon yet though."

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