Adult Kython

Chitinous exoskeletons in a wide variety of forms skitter and clack in all directions of the kython nest. Ranging in size and power from the humble broodling all the way to the tyrannical slaughterking, the kython is a scourge on the material plane.

When kythons mature fully, their torso grows so that they become a little more like upright humanoids (although they still usually hunch over). Their tail drops away as they pass into this stage, but they gain another set of clawed arms. The exoskeleton is now either green, dark blue, or black. Adults guard the nests and carry out most of the work that needs doing for kython society as a whole. Most kythons remain in this stage forever. A few mature into more specialised stages, most of these becoming impalers, a few transforming into slaymasters, and very rare individuals becoming slaughterkings. Each adult has a 30% chance to possess a kython weapon.

Fiendish Origins. When a group of powerful fiends were trapped on the Material Plane, they attempted to create more of their kind through magical means. The result was a swarm of little, eyeless, reptilian creatures that displayed some insectoid traits as well. As these creatures matured, they took on varied forms. None of them were loyal to the fiends that created them, but they were wholly evil nonetheless. Their creators called them kythons. Because of their origin, they have been referred to as material-bound demons.

Infestation. Kythons have spread throughout the world, breeding rapidly. Their eggs look like wet, mucus-covered stones. They seem interested only in eating and propagating their species.

Relentless. They are entirely without mercy, pity, or compassion for any other creature. As they mature, each answers only to those more powerful than themselves, so slaughter kings are the highest kython authority—at least so far. Given time, the kythons may grow into new forms that are even more specialised and powerful.

Bizarre Language. Kythons speak a strange smattering of both Infernal and Abyssal, but only to each other, never to others. Broodlings do not speak, but understand the commands of other kythons.

Special Weapons.
While Kythons may enjoy tearing their prey to shreds, they are intelligent enough to make good use of weapons. The kythons grow their weapons and devices from eggs similar to those that spawn their young. When a kython lays an egg, it can choose whether the egg will hatch into a broodling or an organic weapon. A kython using any of these weapons substitutes the weapon’s attack for one of its claw attacks when it uses the multi-attack action. Non-kythons cannot make these weapons function. Each kython with a claw attack has a percentage chance (specified in the creature’s descriptive text) to possess one or more kython weapons or devices. To determine which weapon a kython has, roll on the following table or choose one you feel is appropriate. 

d% Weapon

01-20 Acid spitter

21-50 Bone shard crossbow

51-60 Boneblade

61-70 Extra armor

71-80 Mouth launcher

81-90 Mucus pod

91-100 Phase organ

Acid Spitter
ranged weapon
Damage: 3d6
Damage Type: acid
Range: 10/50

Bone Shard Crossbow
ranged weapon
Damage: 1d4
Damage Type: piercing
Range: 20/40
Special: The target is subject to the same poison inflicted by the bite attack of the kython wielding it. 

Boneblade
melee weapon
Damage: 2d8
Damage Type: slashing
Special: attack and damage rolls made with this weapon receive a +1 bonus.

Extra Armor
armor
Special: extra chitinous plates are fitted to the kython’s body, adding +2 to its existing armor class. 

Mouth Launcher
melee weapon
Damage: 1d6
Damage Type: piercing
Special: this weapon fits inside the mouth of the kython wielding it and does not replace one of the kython’s claw attacks, however, it is still included as part of the kython’s multiattack action. A successful hit with this attack grapples the target. While the target is grappled this way, any bite attack made against them by the kython wielding this weapon is an automatic hit. Add +1 to the challenge rating of a kython with this weapon. 

Mucus Pod
equipment
Special: this weapon affixes to a claw of the kython wielding it. When the kython makes a claw attack using the claw this weapon is attached to, the attack also sprays mucus at the target. A creature hit by the attack must succeed on a DC 15 Dexterity saving throw or become restrained in the mucus for 1d4+1 rounds. Alcohol will wash the mucus away, otherwise the restrained target may attempt a DC 18 Strength saving throw at the end of each of their turns to break free. 

Phase Organ
equipment
Special: this small fleshy pod fits upon the forehead of the kython, grafting into place permanently. It allows the kython to cast the misty step spell once per turn.