Anarchocles was a mighty warrior from the Prime Material Plane whose skull was used by Orcus to tip his famous wand. Orcus transformed him into a skeleton warrior first, of course, undead being his thing.
Source: Dead Gods, page 62
Allright, lets go over this one more time. It is ravish, pillage and then burn! The first two can be done in any order but the burning has to come last!
— Dwarf Pirate Captain explaining to new sailors