Wight

A stitched-up corpse, given new life by dark magic as a breeding ground for virulent disease and foul decay. The wight shambles up to its target and plunges a dagger into its gas-filled body causing it to explode... -Wight Description, Cast of Characters, Myth TFL Manual

Description
A Wight is a form of undead that fulfill the role of suicide troops. They were first created by the necromancer Culwyeh as an act of revenge against the people who tried to kill him during in the Great Cleansing.

Wights start off as shambling ghasts before their bodies build up enough gas from within to become walking explosives. When close to nearby enemies, a wight will detonate by driving their knives across its chests, triggering a deadly explosion. Their self destruction have been known to paralyze most things caught in the blast radius. However, the Journeymen's coats protect them from this.

Myth: TFL
" ... though the dwarves before Myrgard were unshaken by the wights opposite them, each knew the slow, bleeding death-fever which awaited those who survived the battle."

"... but they were not driven to attack by malice, what goaded them forward was the pain clouded thought of release from an anguish so singular that it wracked their bodies even in unlife."

Myth II
"...once known as the Messengers of Culwyeh, a name now forgotten by all but the most devout pupils of Necromancy, these miserable creatures seek only release from their hellish existence."

"...preceding the assault on Covenant... two score and nine wights were herded into the Tiber an hours march from the city, there to stand until they burst, rendering the water undrinkable."

Myth III
"…The necromantic art of creating wights is not an involved process, but a timely one. Into the selected cadaver's chest and stomach, a mixture of dung, night polyps, and Kzir fly larva are inserted. The cavity is then tightly sewn up and the Dream of Undeath is bestowed. The corpse must be caged and left to ripen for at least two moons…great care must be taken not to injure the specimen…"

"The Great Cleansing spread across the land - anyone who was claimed to dabble in the Necromantic arts was dragged screaming to the pyre. Culwyeh barely escaped the torch, fleeing into a fetid swampland. Unyielding revenge controlled his mind; searching for a way to strike back at his foes. Though it took many years, he indeed brought to life his first 'Messenger'…"

"...festering in their putrid innards, the filthy polyp fungus feeds off the rotting flesh, and produces a gaseous toxin, so potent and noxious, that it spreads into the very muscle, pore, and bone. Only the stretched and inflated skin keeps the venomous gasses contained. The pustulant flesh is a concoction of virulent diseases; one of which spreads the so-called 'bleeding death-fever'..."