It is simple, the Chaos Dwarf character list is moderate on LL's, yet i was very undecided on who CA would pick, the main reason is that Chaos Dwarfs characters are concentrated all in the Darklands, so you get to know everyone quickly.
The most important characters are:
-Astragoth Iron-Hand: The Main leader
-Ghorth The Cruel: The Main Caster
-Drazoath The Ashen: The "Total Package" Hybrid Lord.
So it leaves the fourth slot up for the secondary characters:
-Rykarth The Unbreakable: Captain of the Immortals. Big Bruiser with a fat Axe.
-Hothgar the Renegade: Is a Deamonsmith, is a wanderer, so can start anywhere and he devised the Doom Engines, sort of Steam/Deamonic magic powering Siege Towers/Tanks created to smash walls and landing the troops on the ruins...
-Gorduz Backstabber: A Hobgobelin Chieftain, very fast with a focus on GS.
-Zhatan The Black: Commander of the Tower of Zharr, and a master slaver. Big bruiser with a mighty Hammer tho.
Personnally, i don't know who to pick between these four, who would you pick between those as a fourth Chaos Dwarf LL ?
Sanity is a curse, madness offers the only freedom...