Craniamon is a Holy Knight Digimon whose names are derived from "cranium" or "cranial", and whose design is derived from the mythological Dullahan. One of the "Royal Knights", it is the one that best understands decorum. It is a perfectionist, and competes with the other Royal Knights for the top two mission completion rates for Yggdrasil's orders. When fighting with an opponent, its policy is always to defeat it with one-on-one combat, and if the opponent is a formidable enemy, its delight is supreme. Craniamon's armor had its code modified by Yggdrasil, and was changed into Black Digizoid. It has become possible for it to generate its "Duo Solar Spear" (Claíomh Solais) and "Omni Shield" (Avalon) from its armor by accessing its data.