Daimon Egg

The Death Busters rely on Daimon Eggs as the origin point for their monster attacks. The core idea holds across every adaptation: an egg is planted into a target, and from that target a Daimon is born. Details of the process, and even the egg's color, shift between the animated and Crystal tellings.

In the 1990s anime Professor Tomoe crafted the eggs to hunt down someone carrying a pure heart. An egg would embed itself in an object, merge with it, and hatch into a Daimon. Once that Daimon fell, the egg pulled free of the object and cracked, venting a dark burst of smoke and leaving a broken shell behind. Some emerged from the Daimon Oven trailing pink smoke, occasionally in the silhouette of a flying reptile. From episode 112 onward the eggs were reworked to imitate a diving water bird that would draw out and swallow a victim's heart crystal, a variant only Mimete deployed.

The Crystal version painted the eggs violet. Pharaoh 90 carried them to Earth on first reaching Professor Tomoe, who then manufactured and studied them in his laboratory so his fellow Death Busters could conjure Daimons in a fight. When one was placed inside a living creature, a monstrous Daimon would burst forth and swallow the host whole; after the creature's defeat the host emerged unharmed while the spent egg was expelled and dissolved without a trace.

The Death Busters as a whole draw on the eggs. In the manga and Crystal, several bear their own names and are lodged inside specific vessels: Kaolinite within Kaori Kuromine, Germatoid within Professor Tomoe himself, and Mistress 9 within his daughter Hotaru. Every member carried an implanted egg except Pharaoh 90 and Mistress 9, the latter having grown from the egg placed in Hotaru.