Dark Siren (Monster)

A mysterious being that descended without warning, cloaked in an ominous aura of water. Bearing a striking resemblance to the esper Siren, this creature of exceptional beauty uses her alluring voice to lure unwitting adventurers to their doom. She may be every bit as powerful as an esper, but she is ultimately an imposter, for where a real esper can be mindful, she will wreak havoc based on nothing more than an impulse. All the same, taking down a creature as ferocious as this will be no simple task.