Undead Ningyo CR 1
Speed 10 ft., swim 20 ft.
Melee 2 claws +3 (1d3+1), bite +3 (1d4+1)
Special Attacks group grapplers, startle
Any creature of 5 Hit Dice or fewer that is attacked by an undead ningyo in a surprise round must make a DC 14 Will save or be frightened for 1d4 rounds. If the subject succeeds on a Will save, it is shaken for 1 round. Whether or not the save is successful, the affected creature is immune to the same undead ningyo’s startle attack for 24 hours. Creatures with 6 or more HD are immune to this effect. This is a mind-affecting fear effect. The save DC is Charisma-based.
Environment any aquatic or land
Organization solitary, pair, or exhibit (3–15)
The bane of fishermen and divers, ningyos lurk in tropical waters, gorging themselves on fish and attacking anything they can sink their tiny fangs into. Nasty little things, these primitive, miniature mer-monsters are bogeymen of the sea, often attacking seagoers, ships, and fishing tackle out of both blind ravenousness and blunt stupidity. With little more organization or society than a school of sharks, these cannibalistic half-simian, half-fish terrors swarm by night and can easily drag those caught on moonlit waters down to drown amid a sea of tiny claws and needling teeth. Yet for all their animal ferocity, ningyos are most notorious for their unquiet deaths. Said by natives to be too mean and stupid to die, a slain ningyo always returns to life by night, obliviously adopting old habits or dragging itself forth from the water to find its killer. By day, though, undead ningyos turn back into normal corpses, sometimes washing up on shore as gruesome and fascinating—but potentially deadly—curiosities. While the knowledgeable burn the eerie corpses they find along the coast, more than one foolhardy beachcomber has collected such an oddity, only to later awake in terror, the tiny withered claws and broken teeth of his weird curio savaging him in the dark. Ningyos measure approximately 2 to 2-1/2 feet long from head to tail, and weigh 6 to 9 pounds.