Host

What is it that inhabits you? Uses you as its own play thing? where did it come from? Or perhaps you already know and are to scared to reveal the truth, or perhaps it has threatened you to keep you quiet.
Either by a Cultist ritual or some folly at the hands of a Lych, Dragon or other powerful being you have become the host of something else, possibly not from this world or perhaps something far more dangerous. Are you devoted to the possible sacrifice of your life to bring this thing into existance or perhaps tame the beast for your own ends, would you want to figure out how to get this infernal thing removed or are you just too petrified to even dare look down that route? Who knows.

Hosts are almost impossible to spot out in the open, often having ritual markings or scripts hidden under clothes, or have intricate tattoos to hide them from hunting eyes. Some have alterations to their physical self, minor horn petrusions or spines are not uncommon, usually taking the shape of that which possesses them, others end up growing wings or multiple legs, seperate screaming heads and other terrors if the rituals have gone awry.

I has been known that if the possession leaves the Host by its own accord, is defeated or forcefully evicted the Host will still show lament abilities of its former inhabitants to some unnatural level whilst other skills and abilites may disappear completely. Ones who have struggled in fighting and taming the host reap the rewards of using the beings inate powers for themselves, though little is told about what happens to the Host in later life.

Skill Proficiencies: Skill Proficiencies, Choose 4: Acrobatics, Athletics, Deception, Intimidation, Insight, Investigation, Nature, Perception, Stealth, Survival,

Skill Expertise: Choose 3 out of your 4 chosen Proficiencies

Your abilites mimic that of the being which inhabits your body, its good to discuss with your DM the nature of the being which enhabits you, perhaps your fighting style or other specialities may centralise from the being itself?

If the Being is Removed or Defeated in one or another means and you survive this, some of your abilites may diminish as they are no longer being hellishly controlled. If this happens, you lose expertise in one of your choises and a proficiency in a different choice, you then may choose a different proficiency in the choices above.

Tool Proficiencies:  None

Languages:  Abyssal, Infernal, Common.

The thing within you knows how to speak with daemon and fiend alike, perhaps it may speak other languages or be able to translate for you. Speak with your DM if there is another language they wish for you to swap out, or add to your Languages known.

If the being is removed, the knowledge of these known languages are imprinted upon you, although at times you may struggle to recall certain phrases, the knowledge is still embedded in your being.

Equipment: An incomplete/damaged ritual book, a explorers pack, Robes (Sacrificial or Cultist), A Dagger, 1 common weapon, 1 martial weapon or a Heavy Crossbow with a quiver of 20 bolts.

Suggested Characteristics

Are you trying to remove this being, do you know it is even there, or are you wishing to bend it to your will? each choice will indicate where your character traits would fall. If you are trying to remove the being do you even know the proceedure or are you rambling in madness to those around? would you be too petrified to speak of it if the thing has forced them to do something, or still forces them to do things against your will? Might your character have black outs in their memory of times when the being was fully incharge only to wake up covered in blood?
These characters may be paranoid, scared, overthink or worry about going forward or hurting others, perhaps they seek solumn moments of respite or in desperation trying to fix their problem without getting others involved. A scared creature is easy to control....

If you are wanting to bind the beast within to your will, or even summon the creature to this plane of existance then your character will be leading to more chaotic, evil natures or perhaps trying to turn the creature to their will for the use of good.
These characters may be strong willed and defiant of the creature, overly proud or arrogant to believe the can keep the thing within at bay. They may follow through with the creatures requests and demands, or fight them for what they want or believe is right. The arrogant ones drop there defences far too easily....

If freed from their position as Host, Characters would follow to the "Haunted one" background decription/ Feature. Likewise, if they wish to control the being within them then speak with your DM and consider taking some levels in Warlock.