Correction. The wereseals in Master D&D and
PC4 - Night Howlers (1992) are different creatures.
The Master D&D (and Rules Cyclopedia) Wereseals are massive sea lions with 5 HD females and 8 HD males (they appear to be similar to the
Northern Sea Lion, with males weighing up to 2,500 pounds), so they're likely Large size in 3E terms. I guess we can call these "Weresealions" to distinguish them from...
The
PC4 - Night Howlers (1992) Wereseal is a 4 HD Medium-sized seal (up to 8 feet long). They entry technically covers two different wereseals - one based on the Fur Seal and the other the Harbour Seal (Common Seal) - but they only differ in their Hold Breath multiplier and speed on land. We should be able to cover them both with one entry.
Oh dang it, I've found another one - the BECMI Werefox. This is (yet again) different from the AD&D Werefox (aka the Foxwoman), which we can forget about because it has an official conversion in
Ravenloft Gazetteer I (not that I like that version very much...but then I do already have a Cleon Special version of it).
Oh double dang it, the BECMI Werebat also has some differences from the standard AD&D Werebat, since it has a disease bearing bite. PC4 also gives a high level one stunning ultrasonic shriek special attack.
Oh, and there's also at least two more werebats, there's a "Deep Werebat" in the
MC11 Forgotten Realms Monstrous Compendium who appears to be a 2E version of the "Man-Bat" Werebat in
Dragon #90. They both have a bite that causes an
enfeeblement effect and is extremely (80%) likely to give the victim lycanthropy, plus they have a blood drain attack too boot.
Secondly, there's a "Giant Werebat (Shadkyn)" in
Dragon #266 who has a shriek attack and is, well, a Giant.
Better add those as possibilities, although I'm inclined to fold at least some of the Werebats into one entry - maybe a "Greater Werebat" that gains an additional special attack? The PC4 Werebat doesn't seem different enough from the 3E standard werebat to deserve its own entry.
So the list now has up to nineteen entries, depending on what we use:
Catwere from
Children of the Night - Werebeasts (1998).
Werebat from Master Set and
PC4 - Night Howlers (1992).
Werebat, Deep Werebat from
Dragon #90 (1984) and
MC11 (1991).
Werebat, Giant (Shadkyn) from
Dragon #266 (1999).
Werecobra from
Children of the Night - Werebeasts (1998).
Weredog from
FR7 - Hall of Heroes (1989).
Weredolphin from
FR7 - Hall of Heroes (1989).
Weredragon from
FR7 - Hall of Heroes (1989).
Werefox from Master Set and
PC4 - Night Howlers (1992).
Weregorilla from
Children of the Night - Werebeasts (1998).
Weremole from
Demihuman Deities (1998).
Wereowl from
FR7 - Hall of Heroes (1989).
Werepanther from
FR7 - Hall of Heroes (1989) and FRE1
Shadowdale (1989).
Werepanther from
MCA2 (1992) plus
Panther Lord from
MCA2 (1992).
Wereseal(ion) from Masters D&D.
Wereseal from
PC4 - Night Howlers (1992).
Wereshark from Companion D&D and
PC4 - Night Howlers (1992).
Werespider from
FR7 - Hall of Heroes (1989) and MCA3 (1996).
Wereswine (aka
Devil Swine) from Expert D&D,
PC4 (1992), and
Mystara Appendix (1994).
Can you think of any other shapeshifters? We've almost got enough for two batches!
EDIT: We decided to add the FR7 Werepanther to the list as a separate creature to round the number of shapeshifters up to 20.