Barbed Devil

Resembling a tall humanoid covered in sharp barbs, spines, and hooks, a barbed devil has gleaming eyes that are ever watchful for objects and creatures it might claim for itself. Barbed devils are known for an alertness that makes them difficult to surprise, and they attend to their duties without boredom or distraction. 

Alertness

Barbed devils are excellent watchmen due to their inherent alertness. You gain the feat Alert and proficiency in perception

Ability Score Increase

Choose an ability score to increase by 1

Claws

Your unarmed attacked deal 1d4 damage

unarmoured defense

While unarmoured your AC is equal to 12 + Dex mod

Erinyes

Legends tell that the first erinyes were angels that fell from the Upper Planes because of temptation or misdeed. Erinyes are always willing to take advantage of being mistaken for celestials in their missions of conquest and corruption.

The erinyes appear as male or female humanoids with statuesque builds and large feathery wings. 

Ability score increase

Choose an ability to increase by 1.

Choose either strength or dexterity to increase by 1.

Wings

You have feathered wings that resembles those of angels, however, their colours tend to be red or black opposed to the white of angels.

Hellish Weapon

As a bonus action, you may imbue a weapon which you are currently holding with fiendish poison. For one minute, melee weapon attacks with the weapon deal an additional 1d6 poison damage. You must maintain concentration during that time, as if you were casting a spell. If you lose concentration or lose your grip on the weapon, the poison effect ends. After you use this ability, you can't use it again until you complete a short or long rest.

Ice Devil

It is a misconception that Hell is full of fire and brimstone. The Nine Hells are as varied as the mortal realms.

Found most commonly on the cold layers of Stygia and Cania, ice devils serve as commanders of the infernal armies of the Nine Hells, tormenting lesser devils as an outlet for their anger and resentment.

Resembling a giant bipedal insect, an ice devil has clawed hands and feet, powerful mandibles, and a long tail covered in razor-sharp spikes. 

Ability score increase

You can select 2 ability scores to increase by 1

Command of ice

You have an innate ability to cast magic. Once per turn, you can create ice. This ice must be no more than 5 feet wide, 5 feet high and 6 inches think. This ice lasts for 1 minute or until you are incapacitated, you lose concentration (as if you are casting a spell) or you die.

The ice has 15hp and AC 10. It is vulnerable to fire damage but has immunity to acid, cold, poison, psychic or necrotic damage.

Unnatural chill

As a bonus action you can freeze metallic items you touch for 1 minute. You must maintain concentration as if you were casting a spell to maintain this.

If this item is a weapon you are wielding, it deals 1d6 extra cold damage upon a hit.
If this item is your own armour, you gain resistance to the next source of fire damage. Taking fire damage automatically ends the spell.

If the item is held by, or touching a creature other than yourself, they must drop or remove the item at the start of their turn or make a saving throw vs 8+proficiency+Charisma mod. If they fail, they take 1d6 cold damage.

Unarmoured defence

Ice Devils have a thick icy armour that helps to protect them. While unarmoured you have an AC of 12+dex modifier.

This does not stack with any other natural, or unarmoured defence abilities.

Claws and tail

your hands have claws which modify unarmed strikes to 1d4 piercing damage.