Punishers

Punishers
Battle Cry Unknown
Origin Unknown (Could be White Scars successor given the Warband Leader)
Warband Leader Gull Khan (Deceased)
Base of Operations Unknown
Strength Unknown
Specialty Unknown
Allegiance Slaanesh
Colours Bone with black skeleton imagery on armour
Spooky Scary Skeletons

Those Halloween themed boys are obviously unknown to the rest of the lore and W40K fans because why would they be known, they aren't Black Legion or World Eaters. Anyway, they are famous for unleashing the Twin Punisher Wars. In the first one they outnumbered the Dark Hunters on their own homeworld, BUT STILL LOST BECAUSE EVERY WARBAND WILL LOSE TO THE IMPERIUM, OVERPOWERED SONS OF BITCHES! In the second Punisher War the same shit happened so I don't know why I talk about it anyway, but this time the Dark Hunters got help from the Eldar.

Case and point, Punishers are unknown and deserve a bit of credit for almost taking over the homeworld of the Dark Hunters after deploying QUARTER OF A MILLION OF CULTISTS on the surface of the planet as their first wave in the first Punisher War AND STILL LOST!

Another warband with a bit of fluff around them, but to be included in the category "WHY THE FUCK DO WE EVEN EXIST?"

The Traitor Legions of Chaos
Chaos Legions: Alpha Legion - Black Legion - Death Guard - Emperor's Children
Iron Warriors - Night Lords - Thousand Sons - Word Bearers - World Eaters
Warbands: Apostles of Contagion - Bloodborn - Blood Gorgons - Broken Aquila - Company of Misery
Crimson Slaughter - Disciples of Destruction - Dragon Warriors - Extinction Angels
Foresworn - Lords of Decay - Plague Fleet - Prodigal Sons - Punishers - Red Corsairs - Sons of Malice
The Brazen Beasts - The Consortium - The Flawless Host - The Purge - The Reborn
The Scourged - Skyrar's Dark Wolves - Violators - Warband of Subsector Aurelia - Steel Cobras