Homebrew demon Species Details

"Demons, kid, they ain’t your run-of-the-mill bad guys. They’re nastier than a nest of rattlers with a side of rabies. You see one, it's already too late. Black smoke, pure evil that’s crawled out of the pit, rips through people like a damn wrecking ball, possessing whoever's dumb enough to be in the way. And they love to twist the knife—they know your darkest secrets and won’t hesitate to make you bleed with 'em. Eyes go black as coal, but don’t let that fool you into thinking that's all they are. Nah, they’re smarter, stronger, and damn near impossible to kill unless you’ve got iron, salt, or one of those fancy exorcism rituals. But even then? That’s just sending them back to Hell, where they’re gonna be real pissed off, and they don’t forget a grudge."

— Robert S. Singer

Made by Lucifer or corrupted human souls whatever the case is demons are destructive and thirsty for power corrupting souls and causing death their only calling

Creating your character 

Ability Score Increase

Your Strength or Dexterity score increases by 2, and your Charisma score increases by 2.

Age

Demon live until forceful death

Languages

You can speak, read, and write Common and Infernal.

demon Traits

Species Trait Introduction

Creature Type

You are a Fiend

Size

Depends on possessed creature

Speed

Your base walking speed is 30 feet.

Your base flying speed is 40 feet when in smoke form

Darkvision

your demonic gift gives you ability to see in the darkness, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

demonic Resistance

You have resistance to bludgeoning and immunity to cold damage.

blood of the abyss

You know the thaumaturgy cantrip. When you reach 3rd level, you can cast the hellish rebuke spell as a 2nd-level spell once with this trait and regain the spell after you finish a short rest. When you reach 5th level, you can cast the darkness spell once with this trait and  regain the spell after you finish a long rest. Charisma is your spellcasting ability for these spells.

Self-Reliant and Suspicious

demon possessed creatures have black eyes that can and will scare folk but if the demon is strong enough it can change the eyes to normal

demons that come out of hell and possess creatures are here to cause chaos or make deals so are rarely trusted

Possess

You may possess a creature in 20ft radius during your long rest switching your subclass according to the creature type, you may possess creatures only of medium and smaller size, the creature's challenge range most be less then your or if it's equal to yours you most and the creature need to roll a D20 and the higher number wins