Ōmukade

Sources present Ōmukade within narrative folklore as a monstrous centipede encountered in mountain lairs. The best‑documented traditional narrative connection is the Tawara Tōda (Fujiwara no Hidesato) legend: while the hero crossed a bridge over a lake, he was entreated by a giant serpent to avenge the serpent's slain kin; the offending centipede made its lair at nearby Mount Mikami and was confronted and slain in that episode. The supplied sources do not record a cosmogonic origin or a biographical account transforming a human into the creature; it appears as a monstrous centipede‑being in the tale.

Ōmukade is described in the sources as a giant centipede — literally 'large hundred‑feet' (大 + 百足) — and specifically as a man‑eating mountain centipede. The supplied materials give no extended anatomical detail (such as color, exact number of legs beyond the generic centipede implication, or precise size measures); descriptions emphasize its monstrous scale and predatory nature rather than fine morphology.

Traditional material attributes to Ōmukade predatory, hostile behavior toward humans and antagonism toward large serpents and dragons. In the Tawara Tōda legend it resists ordinary projectiles (the hero's first two arrows were ineffective) but is killed when an arrow is smeared with human saliva, indicating a specific vulnerability recorded in that narrative. Modern popular culture adaptations expand and vary its powers (examples cited in the sources include energy‑eating or emotion‑influencing variants in media), but those are creative retellings rather than claims from the classical folklore summarized in the provided sources.