While changelings can look like anyone, they do have a true form. Their natural look can be scary to some due to their lack of detail and distinctive features. Their skin tone is always pale, either white or light gray, and they tend to have slender bodies with limbs slightly longer in proportion to other humanoids.
The true form of a changeling is a bit paler than a typical human with slightly elongated limbs. Their eyes are colorless and ringed by black as pictured in the artwork above by Julia Zhuravleva. They have no body hair, but the hair on their head can be platinum, white, or silver.
Changelings born from two changeling parents are born in their natural form: pale, slender, with colorless eyes and white hair.
The changelings left by the Mamuna were said to have a noticeably different appearance; an abnormally large abdomen, unusually small or large head, a hump, thin arms and legs, a hairy body, and long claws. Mamuna changelings would also get their first set of teeth prematurely compared to a human baby.
The surest way to tell if you have a Changeling on your hands is by observing the temperament of the human in question. Changelings are constantly unhappy, unfriendly, and mean. They may be very cold and aloof, and may even recoil from human touch. Changeling babies' appetites are never satiated.
They have large colorless eyes circled by thick black rings. Their hair color is most commonly a light shade of silver followed by platinum and blonde. In rarer cases, their hair can be pale shades of green, pink, and blue. Similar to elves, changelings lack body and facial hair.
Changelings are humanoid creatures with discolored, slimy skin, hollow eyes, and a round mouth with many teeth. They can appear human, but their true nature is revealed in their reflection.
However strange appearances aside it was their behaviour that marked them out - changelings were said to be either extremely badly behaved - constantly crying and prone to violence, or at the other end of the spectrum strangely docile, often mute and seemingly unable to comprehend anything about the human world they ...
Are they biologically asexual and just choose their current sex with shapeshifting? Yes. What's been stated in the past is that changelings set their sex with shapeshifting.
Unlike doppelgangers, which are entirely genderless, a changeling does have a default gender that manifests in adolescence, but each changeling can adapt his or her form to be of either gender, hermaphroditic (both genders simultaneously), or entirely genderless.
Changelings can look like anyone at any given time, but all changelings have a true form. The true form of a changeling is usually a pastel color, ranging from light pinks, purples, greens, yellows, and blues, even greys.
Though a changeling can appear as nearly any medium-sized humanoid, their natural appearance is that of a featureless humanoid, with pale skin and a face nearly bereft of characteristics. Their noses are short, their ears are small and flat against their skulls, and their head shapes tend towards smooth and ovoid.
The changelings' nature and desire to feed on love are similar to changelings in folklore, who would take advantage of the love given to them by their unwitting caretakers.
According to legend, the abducted human children are given to the devil or used to strengthen fairy stock. The return of the original child may be effected by making the changeling laugh or by torturing it; this latter belief was responsible for numerous cases of actual child abuse.
Changelings have red blood like a majority of the other races. Bleeding around others may alert many that the Changeling is not of the same race (should the blood color vary). For this reason, a Changeling will usually choose to take the form of a race with red blood.
In some cases, the changeling grows up often being very loyal and caring to friends and family despite what they are. They often care more for their friends and family than they do themselves. Most changelings enjoy helping as they get older, but they often feel different, out of place.
As for being tattooed, changelings can definitely be tattooed, and they can just as easily erase the tattoo with a moment's thought.
Changelings have the unique ability to transform their body to look however they want, provided they keep the same arrangement of limbs they already possess. It is very rare to actually see a changeling in it's 'true' appearance. Even when disguised, changelings can instinctively recognize each other.
It's not widely known, but one of the few ways one may determine that a person is, in fact, a changeling has to do with their hands. Changelings generally do not have the skill to replicate "life lines," and sometimes even fingerprints.
A changeling can be detected by its huge appetite and the large quantity of water it drink (a bathtub before morning, if left beside it), its large teeth, its fondness for music and its powers of dancing, its unnatural precocity, or from some unguarded remark as to its own age.
Even when in humanoid form, Changelings did not need to take in sustenance. Odo noted that he once attempted to eat after assuming humanoid form for the first time, but found the experience not only unsatisfying due to his lack of taste buds, but "messy" for reasons he chose not to elaborate.
Appearance. In their true form, changelings are generally extremely pale, showing features devoid of distinctive details, with colorless eyes and silver-white hair.
Changelings have an interesting relationship with gender as a concept, which is probably part of the reason a lot of the art doesn't find it necessary to distinguish the males with facial hair. As they're changelings though, they can have any kind of hair they want.
The Traveler is the patron of all those who welcome change, in body and in philosophy. Its worshipers include changelings, shifters, doppelgangers, and lycanthropes, who see it as the greatest of gods, but only doppelgangers and lycanthropes routinely revere it.