Numerous varieties of creatures are able to significantly alter their shapes; these range from lycanthropes (such as werewolves and werejaguars) to amorphous creatures such as the scamille and other oozes, jellies, and puddings.
Certain species also exist whose main feature is the ability to change shape. This ability is common across the species; it cannot be passed on to others; it is the species' primary method of attack and defense; and it is a conscious effort on the creature's part. Creatures meeting these criteria are collectively known as shapeshifters:
Monstrous Manual:
- Doppelganger
- Mimic
- Killer Mimic
Spelljammer Appendix
Mystara Appendix
- Shapeshifter (Mystara)
- Adaptor
- Metamorph
- Polymar
- Randara
Annual Volume One
- House Hunter
- Young
- Adult
- Ancient
Annual Volume Two
- Greater Doppleganger
- Greater Mimic
- Peltast
- Peltast
- Greater Peltast
PHBR5 The Complete Psionics Handbook (2117)
A Guide to the Ethereal Plane (2633)
Dungeons of Despair (11444)
Villains' Lorebook (9552)
- Shadowmasters (Malaugrym)