Want Something Urban and Horrific?

Well then, build an adventure around finding a Seeder. It's got a great vibe to it - scandalous and horrific. This would work best in the stereotypical debauched giant urban center where everyone one from the known world can be found rubbing shoulders. In a city of 100 languages, a seeder would blend in easiest. The Seeder is a critter from Malevolent & Benign.

SEEDER
SIZE: Medium (6 ft. tall)
MOVE: 120 ft.
ARMOR CLASS: 7
HIT DICE: 2+2
ATTACKS: 2
DAMAGE: 1-4, 1-4
SPECIAL ATTACKS: See below
SPECIAL DEFENSES: See below
MAGIC RESISTANCE: None
RARITY: Very rare
NO. ENCOUNTERED: 1
LAIR PROBABILITY: 50%
TREASURE: Individual: 100-400 gp
INTELLIGENCE: Very
ALIGNMENT: Chaotic evil
LEVEL/X.P.: 3 / 110 + 2/hp

General information: The seeder is a bizarre urban predator, its attacks provoked not by hunger, but by the drive to propagate its species. The seeder is nocturnal, and it is commonly found lingering in the shadows and alleys near bawdyhouses, cabarets, and taverns. It manages to survive in the urban environment through illusion, skill at disguise, and strong instincts.

A seeder can change self at will, but it also relies upon disguises that hide its alien nature. It will commonly have several different sets of clothing, and it favors regions that promote covering the body, such as cold areas where warmth is required and very hot areas where protection from the sun in gained.

A seeder carefully selects only the most prodigious male fornicators as its victims. It lies in wait for them in the shadows. When its chosen target comes drunkenly stumbling by, the seeder attacks. It does not harm the victim, but instead grapples him and releases a soporific gas that knocks out the target while erasing short-term memories. A save against poison prevents this. Those that fail are unconscious for one turn and lose memories of the past hour.

The seeder then replaces its victim’s reproductive cells with its own. Commonly the seeder takes the victim’s money as well. A victim of such an attack is rarely aware of what has taken place, as the procedure leaves no obvious physical changes or pain, and most simply believe themselves to have been mugged. However, whenever the victim mates with a female of its species from then on, the offspring of the union is a seeder. Of course, since the seeder chooses its victims carefully, this may go unnoticed until long after the man has fathered dozens of children in cities and towns scattered all over the land.

Seeder babies initially appear to be rather ugly examples of the mother’s race. They mature quickly; after a few weeks they molt within a few hours into true seeders and attempt to escape from their parents. Seeders reach adulthood in eight months.

Cutting off the offending parts is the only way to prevent reproduction once a victim has been seeded. The only way to reverse a seeding is to cut
off the offending parts and regenerate them.

Languages: Seeders understand common, although they cannot speak it themselves. A seeder cannot speak, only emit an unnerving clicking noise.

Physical description: The seeder is humanoid in shape, but its body is black and chitinous with sharp talons at the end of its hands. Its mind is distinctly alien.