This custom was really the product of extra parts in my fodder bin. Looking at what I had available, I decided to make a half-orc so the rest of my orc army would have someone to push around and bully.
This figure started with an extra Cador body I had in my fodder box. I used the armor and head from an orc legion builder, painting the skin to work with the body (and brand him as a half-orc). I also painted the armor to give it some detail, adding some orange rust effects. The weapon is from a Lord of the Rings figure. I intentionally wanted this figure to be pretty basic and bare, imagining that the rest of the orcs treat him badly and refuse to give him adequate armor or weapons to fight with.