TV-Series
Description
Ivis Necron is one of the Seven Elder Demon Emperors, created 2,000 years ago by Anos Voldigoad from his own blood. He manifests as a skeletal figure draped in ornate robes, with only his skull-face visible, lacking a lower jaw; speech emanates from a jaw-like ornament on his chest. His presence induces unease among demons of the Magical Age.

Ivis initially demonstrated absolute loyalty to Anos. Following Anos's first sacrifice, Ivis and the other Demon Emperors collaborated with the hero Kanon to forge the fictional Demon King Avos Dilhevia, redirecting humanity's hatred away from Anos upon his eventual reincarnation. Kanon fused six of his sources with six Demon Emperors, including Ivis, and erased their memories to safeguard the deception. This erasure caused Ivis to initially fail to recognize the reincarnated Anos.

Specializing in fusion magic, Ivis developed intricate spells and formulas. He cast "Separation and Fusion Reincarnation" on the unborn Sasha Necron to create a vessel for the Founder's reincarnation. This spell unexpectedly split the fetus into twins, Sasha and Misha Necron, destined to remerge at age 15. On their birthday, Ivis intervened to prevent Anos from altering this fate, provoking a confrontation with the guardian god of time, Eugo La Raviaz. Eugo fused with Ivis to combat Anos, but Anos destroyed Eugo's source while sparing Ivis's. Anos then revived Ivis, restored his memories, and tasked him with covertly investigating the other Demon Emperors.

Revived, Ivis operated as Anos's covert agent. He frequently adopted the form of a black cat using shapeshifting magic, gathering intelligence on factions like the Unitarians and tracking rogue Demon Emperors. During Avos Dilhevia's declared war, Ivis fought alongside Anos against three traitorous Demon Emperors. When the ancient foe Jerga resurfaced, Ivis countered Jerga's taunts about demon weakness by employing "Dino Jixes" to temporarily fuse Sasha and Misha back into their original form, Aisha Necron, stalling Jerga.

Later, Ivis and the other Demon Emperors fell under temporary control when Misa Ilioroagu awakened her Avos Dilhevia persona, exploiting their legendary subservience to the Demon King. After this influence ended, Ivis continued serving Anos's efforts to stabilize the demon world. His actions consistently reflect a logical, analytical approach focused on duty, underpinned by his restored memories and underlying devotion to Anos as his creator.