Chaos Gods of Law
The Chaos Gods of Law are three+ Chaos Gods (obviously) who were created in the first edition of Warhammer Fantasy Roleplay. They were referenced later in the "Apocrypha Now" supplement were vaguely alluded to as well in various Warhammer works.
In the Black Library novels for Archaon published in 2014, Be'lakor informs Archaon that they never existed giving them their first mention in the modern Warhammer era. However the canonicity of this is dubious as there was a very distinct disconnect between Black Library and army book canon illustrated particularly well in the End Times event, and that Be'lakor is not a reliable source of information as he only claimed once that he never lies but only because it makes his schemes boring, and this was in a Warhammer 40,000 novel.
If the Chaos Gods of Law ARE canon, then they would also exist in 40k as well.
All three identified ones are siblings. Solkan and Arianka are lovers. It was implied there was additional Chaos Gods of Law however.
Solkan the Avenger
Solkan is the warrior god of Law, and thus would be Khorne's polar opposite. Witch Hunters primarily worship him and he empowers them against the Chaos Gods of...Chaos. It isn't stated if his worship is accepted within the Empire like Morr or Shallya, or if their worship is a heresy. The 40k equivalent however would undoubtedly be heretical, as just about everything is.
Arianka
While Solkan represents the enforcement of law, Arianka is the disciplining nature of it and thus is a patron of warriors. Tzeentch found her to be a nuisance who could potentially unravel his designs, so he manipulated her somehow into becoming trapped inside of a coffin made of Laihtero, the rarest form of Gromril which resembles a crystal that constantly emits soft light. The keys to her prison are hidden somewhere in the mortal world. The coffin itself was hidden beneath the Empire city of Praag, capital of Kislev. Her sword Laihtendrung was also made of Laihtero.
Kaleb Daark, Malal's Champion, was tasked with killing her to prove his worth. He was lead to her coffin (which Skaven had previously tried to destroy via flamethrowers) and endeavored to find the keys to kill her although this was chapter three of a four chapter series (the fourth was never released) so he likely didn't succeed. This plot was never brought up again because of legal issues involving Malal although it makes Arianka the last of the Chaos Gods of Law to be mentioned and thus the most canon of the three.
Alluminas
A god of the most absolute form of light, who's gaze renders other beings into unchanging unmoving light. He is not worshiped by many mortals because his portfolio is alien and incomprehensible entirely to them (well, technically all Chaos Gods are but Alluminas is without something simple or appealing like the others have). Note that this was before the lore that empowered the Chaos Gods by worship.
| The Chaos Gods of Warhammer 40,000 and Warhammer Fantasy | |
|---|---|
| Four Main Chaos Gods: | Khorne - Nurgle - Slaanesh - Tzeentch |
| Other Gods of Chaos: | Archaon - Hashut - Horned Rat - Nuffle Malal - Morghur - Necoho - Zuvassin |
| Chaos Gods of Law: | Alluminas - Arianka - Solkan the Avenger |