ドラゴンゾンビ
from Monster Girl Encyclopedia
Origin
Caves, Mountainous Areas, & Wetlands
"Dragons", the rulers of earth, turned undead. Due to the height of their arrogance, dragons look down upon human men as unworthy, and there is no small number of them who will live out their entire life without having ever copulated with a man. Mamono mana gathers in the corpses of such dragons, combining with their lingering regret over not having been able to find a man to be their husband and have children with, reviving them as "dragon zombies". In exchange for an imperishable body, their mind, rational faculties, and pride as a dragon completely rot away in a slimy manner, and they become exactly "female lizards" who are constantly dripping with love juices and will only seek what they couldn't obtain while still alive: to copulate with a human man and produce children.
Monster Girl Encyclopedia