Weres of Vanth

Weres are notorious if rare on Vanth, the victims of a hereditary curse that brings about excessive hair growth*, alarming allergies and a monthly involuntary transmogrification associated with one of the Vanth's moons. The origin of the curse varies by the family line, from a pissed-off deity or experimental gene splicing going awry to the unspeakable depravity of bestiality. (Who am I kidding, it was the bestiality most of the time.)
 

While certain level of animosity against these animal-shifters is not uncommon, a poll carried out in the Realm of the Hobling Emperor and the cities along the western coast of the Sea of Great Peril showed that most citizens are accepting of their therianthropic neighbours, as long as all fowl devoured during the full moon is promptly compensated for. In the south-eastern jungles, Weres even tend to hold positions as revered druids, shamans or other religious leaders, due to the belief that they can commune with the spirits of nature much more easily than other folk, especially in their animal form.

By contrast in the Slaver Kingdoms, Weres are considered a high-priced commodity, as they can be sold either as curios to extravagant nobles, or as quality breeding stock**. And don't even ask about the Shunned Towns.

A recent study published in the Paranature journal suggests that it is not advisable to tell any jokes along the lines of "You mamma was a bitch. Literally." in the presence of Weres. The study concluded that such a joke tends to elicit a brutal, violent reaction from 93.7 % of Weres.

 

Wereshark, werecheetah, werebat and weregator.

 
Were-animal
When you roll this racial option, assemble your therianthropic curse from the tables below, then roll on the table of races again to find your actual race when you're not prowling the night in animal form.
 

Wereserpent
From Fantastic Beasts: The Crimes of Grindelwald

 
Beast Form
You turn into an animal form. Roll here.

If you don't like the result, you may reroll, but only once. If your beast form is particularly tiny, you may turn into a swarm of such animals instead.

While in your were-form, you have all abilities that the animal would possess, whether extra combat effects, better senses, or new forms of movement, but you cannot wield weapons or wear armour. Wounds carry over between forms.

You always shape-shift into your animal form on the night when your moon is full, and cannot turn back until morning when you revert automatically. At any other time, you may try and roll Great Feat to change. This roll can only be attempted once per day, whether to turn into an animal, or to turn back.

You can communicate with animals of similar type as your beastly form, no matter your current form.
 
d20 Banes
When exposed to your Bane (skin contact for the materials, otherwise as appropriate), take d4 damage per round. When attacked with your Bane, take double damage.

1. silver,
2. gold,
3. iron (but not steel),
4. copper (including bronze),
5. chrome,
6. obsidian,
7. gems,
8. glass,
9. ice (but not snow),
10. paper,
11. fresh wood,
12. old bones,
13. synthetic fibre and plastic,
14. sea water,
15. alcohol,
16. garlic,
17. music and singing,
18. phasics,
19. magic spells and weapons,
20. the light of your moon; you change on new moon instead.

d8 Moons

1. Black Moon
2. Green Moon
3. Grey Moon
4. Half-Moon
5. Red Moon
6. Skull Moon
7. White Moon
8. Yellow Moon

Vanth actually has nine moons, occasionally. The Blue Moon, also known as the Capricious Traveller or the Stargazer's Bother, tends to appear sporadically for a few days, then not be seen for many months. Its erratic presence thankfully doesn't affect any vanthian Weres, who would otherwise be quite inconveniently at the mercy of its quantum whimsy.
 

Good old werewolf transformation.
From Hemlock Grove

  
*) Not to be confused with the much more common super-hair-growth mutation. Also note that non-mammalian Weres tend to develop small patches of feathers or scales instead of becoming hirsute.
**) It has been shown that interbreeding with Weres increases the intelligence of animal offsprings to near-human levels. The loose alliance of several Were tribes known as the Horse Tamers voluntarily uses this quirk of biology to breed their world-famous, highly intelligent horses.