Homebrew Imposter Species Details

Physical Description 

Imposters, while incredibly rare, are a very powerful race. They have unrivaled disguising ability. They can change their skin into any shape, color, or texture so long as it doesn’t exceed their original mass. Imposters can change their skin into the shape of an object if they so choose, but this object will still be a part of them. Thus, if it is removed, they will take damage and the object will revert back to the Imposter’s skin. Something Imposters inherit from their Mimic ancestry is their maw. They have enormous jaws with razor-sharp teeth that cover their stomach in addition to their regular humanoid mouth. The tongue of their maw has the same transformative abilities as their skin. The only major difference is its size. It can be transformed into a blade and used as an edged weapon similar to a spear. The mouth on their head is strictly for talking and breathing and is completely incapable of swallowing. Imposters almost never reveal their true forms even to themselves, as they consider their false identity to be just as legitimate as their real one. Their true form has light grey skin speckled with darker grey freckles. They have very tough coarse skin similar to the calloused hands of a hard-working farmer. When in their true form the mouth on their head has longer sharper teeth with two top and bottom fangs sticking out of their mouth causing them to drool. Their teeth also render them incapable of speech in their true form. They have white hair with streaks of black and grey. Due to their heritage, they have beady white eyes and are partially blind.

Diet

Imposters have a ferocious carnivorous appetite. On average, they consume around 245,000 calories a week (that’s 70 pounds of meat). While they only need to eat once a week, they can eat about 10 pounds more without becoming sick. They can chew and digest any type of meat or bone, and while they can pass other things like plants or minerals through their digestive system they will either receive no nutritional value or get sick.

Society

When hungry, Imposters have an intense desire to eat any creature in sight. This gives them a difficult role in society. Some Imposters overcome their desires with intense mental fortitude while others give in and kill in secret. Of course, the fact that Imposters can change their identity at a moment's notice helps them avoid any repercussions. Those that give in to their nature will take on the identity of someone else, often killing the original and taking their place. Even if not for nefarious reasons, good imposters will still hide behind a false identity, for their own safety.

Adolescence

Imposters can only ever be born to a Changeling mother. Since Mimics reproduce through mitosis, the Imposter will grow out of its mother's womb and gut until it rips itself clean off of its mother, killing her in the process. The adolescent Imposter will then consume its mother’s corpse and hide while it finishes digesting. The rest of its first month of life is spent hunting and eating anything it can find, to grow to full maturity.

Names

Imposters have no true names. They go by the name of whatever person they’re emulating, or by any common name. Some refer to their true selves as names others have called them. Such as insults, or their serial killer alias. Those few that reveal themselves to close friends or family are given real names that seem fitting, according to those that give them. But across all cases, Imposters are never the ones to chose their name, as they have no personal preference and are generally not creative enough to create their own persona.

Imposter Features

• Ability Score Increase. Your Constitution score increases by 2 and your Charisma score increases by 1.
• Age. Imposters reach full maturity in only a month and live up to 120 years. While an Imposter can shapeshift to conceal their age, the effects of aging still catch up to them.
• Alignment. Imposters are naturally chaotic neutral/evil but can learn to control their carnal desires to fit into other alignments.
• Gender. All Imposters’ true forms are asexual and have no genitalia.
• Size. In their natural forms, Imposters average between 5 to 6 feet in height, with a husky build. They can also adjust their size by 1 foot. Their size is Medium.
• Speed. Your base walking speed is 30 feet.
• Liar's tongue. You gain proficiency with two of the following skills of your choice: Deception, Insight, Intimidation, and Persuasion.
• Languages. You can speak, read, and write Common and one other language of your choice.
• Amorphous Surface. Due to your Mimic/Changeling heritage, you can not only change your appearance but you can change the texture and shape of your skin. 
• Adhesive. You can change your skin’s texture to become sticky. Ability checks made to escape your grapple have disadvantage.
• Monstrosity. Your creature type is both humanoid and monstrosity.
• Inanimate Appendage. As an action, you can polymorph your skin to resemble an object. However you can not change your mass, so the object must not be bigger than the amount of skin used. The object is also still a part of your body so it can not be removed without inflicting damage.
• Belly Maw. You have an enormous mouth with sharp teeth spanning your gut, which you can use to make unarmed strikes. If you hit with it, you deal piercing damage equal to 1d4 + your Strength modifier.
• Edged Tongue. You have a large tongue inside your stomach’s maw. This tongue can be turned sharp and jutted forward to make unarmed strikes. If you hit with it, you deal piercing damage equal to 2d8 + your Dexterity modifier.
• Undeveloped Eyes. In your true form, your vision is heavily blurred, and you have disadvantage on perception rolls.

Imposter Traits

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