Your Strength score increases by 2 and your Constitution score increases by 1. This only applies to you and your other head once total.

Ettin-kin reach adulthood at 2 or 3 years of age, and live up to 70 years.

Ettin-kin are usually chaotic in nature as a result of both being raised by orcs and their lack of any privacy. They are often neutral or evil, but good ettin-kin aren't unheard of.

Due to domestication by orcs over hundreds of years, ettin-kin are shorter than their wild brethren. You are between 7 and 8 feet tall, and weigh between 350 and 450 pounds. Your size is Medium.

Your base walking speed is 40. You share your speed with your other head, and together you can use your total speed each round. For example, if you were first in the initiative roll, you could move 25 feet on your turn, then your sibling could move up to 15 feet on their turn for a total of 40 feet.

You share your body with another head. You only have control of your corresponding arm. For example, if you are the left head, you control the left arm. You share control of your legs and the rest of your body with your other head.

You and your other head share maximum health, current health, equipped set of armor, AC, inventory, and always occupy the same space. To calculate maximum health, use the formula: Your character level hit points + Your other head's character level hit points + Your shared CON modifier per level. If you aren't proficient in an armor type but your other head is, you may wear it as if you were proficient in it, and vice versa. However, any armor restrictions (such as the druid's aversion to metal armor) still apply.

You share your Strength, Constitution, and Dexterity stats. When you roll a Strength, Constitution, or Dexterity saving throw or ability check that requires the use of more than one arm, both you and your other head must roll and average the two rolls together, rounding down. Your individual roll gains (dis)advantage and/or a bonus, such as proficiency, as you would add it, and is then averaged with your other head's number. Only when it is averaged do you add your shared ability modifier to get the final result.

You each have individual Intelligence, Wisdom, and Charisma stats, and you each roll your own saving throws or ability checks involving those stats. You also each have and roll for your own initiative, and have your own turns.

When you and your other head gain the Ability Score Increase feature through leveling, you can't put more than two points into the same physical stat between the two of you. If you and your other head both have an identical feat or feature that gives a physical ability score bonus or an AC, speed, or hit point increase, you only apply it once; they do not stack.

Feats and features that affect your physical body affect both you and your other head. For example, if one head had the paladin's Divine Health feature, it would make both heads immune to disease. However, if that feature or feat requires the head who has it to actively use it, only that head can take advantage of it. For example, only the head with the Athlete feat could take advantage of its bonuses, besides its Strength or Dexterity increase, which it would share with its other head. The head without Athlete would need to use up half of their shared movement if it stood up on its turn, while the head with it would only spend 5 feet if it did so on its turn.

Any Resistances, Immunities, or Vulnerabilities that you have or your other head has are shared with the other head.

Spells or abilities that affect your physical body affect both of you. Any damage you take, your other head also takes. You share any physical conditions affecting your body with your other head, but not mental or head-affecting ones ones (Blinded, Charmed, Deafened, Frightened, or Stunned). Poison and area-of-effect damage sources, such as spells, only affect you and your other head once, except for psychic area-of-affect damage sources, which will hurt each head individually to damage your shared body twice.

If you or your other head have a damage-over-time effect on them, it is only applied on your or their turn, respectively.

If you are or your other head is transformed, the transformation affects both of you. You will transform as normal, except you will keep your two individual heads, and continue sharing control of your body. If the transformation is total, like the druid's Wild Shape Feature or the Polymorph spell, you retain your Conjoined, Tug O' War, and Wakeful traits.

You may use your item interaction on your turn to have your other head draw or stow a weapon if they agree to it.

If a target leaves your melee attack range, only you or your other head may use a reaction to perform an attack of opportunity; you cannot both do so. You and your other head can decide amongst yourselves who will, if anyone.

In order to make a ranged attack with a weapon with the ammunition property, the head not wielding the weapon must have a free hand. However, you may fire a weapon with the loading property if it is loaded even if your other head's hand is not free. To load it, though, their hand must be free. If you have the Crossbow Expert feat, you can use it if your other head is wielding a hand crossbow.

You and your other head can only benefit from the Defense Fighting Style feature once; it does not stack if you both have it.

You may use the Dueling Fighting Style feature even if your other head is wielding a weapon, but cannot use your bonus action to make an attack with their weapon if you do, regardless of what that weapon is.

Thanks to your Giant Ancestry feature, you may use the Great Weapon Fighting style feature even if you are wielding your two-handed or versatile weapon in one hand.

You may use the Protection Fighting Style feature or Shield Master feat only if you wield a shield, not your other head. If you each wield a shield, their AC bonuses do not stack.

In order to take advantage of two-weapon fighting, your other head must be wielding a weapon that applies to the fighting style and be willing to let you use it. You may use the Two-Weapon Fighting Style feature or Dual Wielder feat as if you were wielding two weapons if this is the case.

Accustomed to life in caves and traveling at night, you have superior vision in darkness 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.

If your other head is forced to move (like with the Dominate Person spell) or you disagree with their chosen movement, you can use your reaction to fight the movement, attempting to force yourself to go prone. You and your sibling each make a Strength roll against the other. If you are successful, you go prone. If you are unsuccessful, your sibling's movement is enacted.

When your other head is Charmed, Frightened, or Stunned, you can use a bonus action to use a Strength check to slap them out of it, with a DC of 12. If the check succeeds, take 1d6 unarmed damage and remove your other head's Charmed, Frightened, or Stunned status.

To use this feature, your hand must be free and you can't be affected by any of the statuses mentioned above.

As a bonus action, you can move up to half your speed toward an enemy of your choice that you can see or hear. You must end this move closer to the enemy than you started. Once you use this trait, you must finish a short or long rest before you can use it again.

As a result of your giant lineage, you can wield two-handed weapons you are proficient with in one hand, and can use the higher damage die of versatile weapons you are proficient with when wielding them in one hand.

You count as one size larger when determining your carrying capacity and the weight you can push, drag, or lift.

You can be awake while your sibling sleeps, and vice versa. While your other head sleeps, you can move your arm and use your hand, but cannot walk. You can also make other minor movements, like turning your body or even eating.

You can speak, read, and write Common, Giant, and Orc. Growing up around both orcs and other ettins, picking up all of these languages was crucial for your survival.