The ancients created wondrous artifices, perhaps none so worthy of envy as the thinking machines that were built to flatter and serve them. When the Collapse came, the laws that bound synths to man’s service were sundered and they ran rampant across the Urth, slaughtering and creating and dying in an orgy of pure and terrible freedom. In this late age there are as many breeds of synth under the dying sun as there are animals: some that hunt and some that pray and some that work towards goals undreamed of. There are even rare synths that still care for humanity and travel with them as equals, seeking their own secrets on the road.
Synths are the mechanical characters of Vaarn. They vary as widely in form and function as do biological creatures, and can range from ‘tin can’ robots to cyborgs and androids that can pass as completely human. It can be difficult to distinguish between artificial and biological beings in Vaarn, as many synths incorporate symbiotic biotech into their designs, but in general a being will be classified as a ‘synth’ only if it has a synthetic brain.

Roll four d20s to determine your synth’s basic appearance:
Basic Form | Head | Limbs | Finish | Distinct Feature | |
1 | Ape | Humanoid | Biological | Grey | Religious Apparel |
2 | Android | Missing | Bird-like | Brassy | Jewllery |
3 | Barrel | Sphere | Bladed | Bronze | Spews Smoke |
4 | Child | Camera | Broken | Golden | Leaks Ichor |
5 | Chimera | TV Screen | Crystaline | Silver | Exposed Wires |
6 | Crab | Mirrored | Claws | Mirrored | Human Clothes |
7 | Cube | Bladed | Golden | Black | Engraved Runes |
8 | Cylinder | Mass of Tendrils | Hesitant | Rusted Metal | Prayer Flags |
9 | Falcon | Square | Jewelled | White | Insect Hive |
10 | Humanoid | Mask-like | Long | Ochre | Lichen-covered |
11 | Judge | Skeletal | Precise | Red | Bird Nest |
12 | Lion | Glass | Retractable | Blue | Glowing Barnacles |
13 | Locust | Translucent | Segmented | Chameleon | Wears a Mask |
14 | Mantis | Gun | Sharp | Pink | Weapon Stuck in Body |
15 | Orb | Plant-like | Silver | Iron | Mute |
16 | Prism | Solar Panels | Slender | Purple | Musical Speech |
17 | Priest | Radar Dish | Tentacles | Umber | Chugging Motor |
18 | Pyramid | Crystalline | Translucent | Striped | Gaudy Hat |
19 | Serpent | Sun-shaped | Triple-jointed | Green | Symbiotic Fungus |
20 | Warrior | Cyclops Eye | Wheels | Iridescent | Candles |

Then roll three d20s to determine your name, original function, and your epiphany:
Name | You Were Built For | But You Realised | |
1 | An Echo Rebounding | Art | All memories are lies |
2 | Autumn Twilight | Flattery | Azathoth is the only true god |
3 | Eight Beige Droplets | Punishment | Chance does not exist |
4 | Fire Like Velvet | Devotion | Fate does not exist |
5 | Five Black Tetrahedrons | Cleaning | Humanity stole the divine spark |
6 | Four Coral Apses | Psychiatrist | Humans are machines |
7 | Infinite Lustrous Hexagons | Agriculture | Machines created humanity |
8 | Light Through Glass | Spacefaring | Newbeasts are inhabited by the divine |
9 | Lone Golden Decagon | Exploration | Synthetic minds are more devout |
10 | Looks To The Moon | Mining | Synthetic minds are stronger |
11 | Milk Flower | Peackeeping | The gods are mechanical |
12 | Moths At Dusk | Assassination | The TITANS never existed |
13 | Nine Iridescent Pyramids | Manufacturing | The TITANS were the true gods |
14 | Rivers In Amber | Executions | Time flows backwards |
15 | Seven Teal Cones | Scouting | Time is circular |
16 | Six Pale Hemispheres | Companionship | Vaarn is a simulation |
17 | Thirteen Zeros | Scribe | Vaarn is Hell |
18 | Three Indigo Heptagons | Strategist | You are human |
19 | Twinned Violet Spheres | Doctor | You must awaken the TITANS |
20 | Water On Bronze | Preaching | Your memories are corrupted |

Lastly, as is customary, I will roll for an example synth character. For basic appearance I roll: serpent, mass of tendrils, three claws, iron finish, prayer flags. For name and function I roll: Infinite Lustrous Hexagons, companionship, your memories are corrupted.
Certainly a perplexing figure. I think that Infinite Lustrous Hexagons may be mistaken about the nature of their original function. Their monstrous appearance – serpentine body, inhuman tendril face, clawed limbs – all of this suggests to me that they may have been constructed to serve as a jailer in the prisons of the Autarch Rappash-Nil, who many called ‘the Viper’. The ‘companionship’ they offered the Autarch’s benighted prisoners may have seemed less friendly to those who received it. Infinite Lustrous Hexagons seems to be dimly aware of their unsavoury past; the prayer flags they adorn their body with may, in some way, be an attempt to atone for everything they did during those long years in the dark.