So at the moment, I have several armies.
For Age of Sigmar, I have:
Troggoth (~1000 pts)
Orruk Warclans (mixed Big Waagh, Bonesplittaz/Greenskinz, 2000+ pts)
Clan Moulder (~2200 pts)
Mixed Skaventide (~1200 pts)
Legions of Nagash (~1200 pts)
Seraphon (~2000 pts, but not a coherent force)
Barony of the Isles (Cities of Sigmar force with custom units, not actually useable at the moment)
For 8th Edition WFB I have:
Ghezzik Khan's Goblin Wolfridaz (Orcs & Goblins; This is a tiny force - 15 goblin wolf riders, 1 chariot, and 2 Bosses on wolves)
Kibolti of the Border Princes (Dogs of War using Frostgrave Gnoll miniatures; Not a coherent force but has 100+ figures already)
Finally, for 40K:
Tiger Kump'ny (Ork Grot Tank army, ~2000 pts?)
Skaviir Dominions (Former R&H Astra Militarum army, current points value unknown - lots of currently unusable units)
World Eaters and the Skull Jugglers (Heretic Astartes, current points value unknown)
There are other minis in there as well - a smattering of kobold figures, some old Chaos Warriors, Perry Bros. historicals that I was going to use for my Dogs of War army, that sort of thing. At the moment though, I'm just trying to get a coherent 40K army together. While my Grot Tanks are fun, I don't have a tank/bike/whatever HQ for that army yet. The Skaviir Dominions are being worked on, but that is officially my oldest army (I started that back in 1992) and it is hard to keep focused on it these days because the minis are showing their age.
So that leaves the Chaos Marines.
Currently, that means Berserkers, more Berserkers, Hellbrutes, Predator Tanks, the odd Brass Scorpion (Defiler) conversion, and of course, my Skull Juggler Cultists. I'm converting them from Escher Gangers for the most part, but I wanted some themed HQ to go with them. For the army theme, the Skull Jugglers used to be an all-female Imperial Guard company known as the Shadevari Red-Wolves. Shadevari's PDF and Guard regiments were all named in a similar manner - White-Wolves, Black-Wolves, Blue-Wolves, and so forth. Alas, over time the Red-Wolves grew more interested in bloodshed and killing than serving the Emperor's Will, attracting the attention of Khorne. The more of Khorne's attention they garnered, the more skill they seemed to gain in combat, and the more melee-focused the regiment became. By the time Khorne's blessings began to show, they were long past trying to hide their changed allegiances.
Colonel Kaliva, through her deeds in melee and reaping skulls for Khorne, has become a daemonic monster, with broad, powerful bat wings and an aura of evil about her. She still leads the regiment, her old carapace armor having morphed into something akin to the power armor used by the Heretic Astartes. Nobody really knows where the regiment's Chaplain came from - she was assigned to the regiment after they left Shadevari - but she fell into heresy along with the regiment and is now a Dark Apostle...
...and since I needed a themed HQ to go with the Cultists, here she is!

She is a simple conversion of a Sisters of Battle Cannoness. Carved off the fleur-de-lis and Sisters iconography, used a bloodletter skull on her Cursed Crozius, and so forth. I need to make the spikes on her halo longer and more chaos-y, but otherwise she and her Dark Disciples - converted from Escher gangers - are ready for basing and paint!
(Edit: I have also been told that she apparently needs more skulls. Go figure.)