Here is my first Gorilla test, before you post anything I KNOW the bandanna is over the wrong shoulder LoL - I didn't realize though till I started painting him. I had to make some tough choices with the colours too, in the movie the leather tabards are pretty much the same colour as the Gorillas skin, which is too dark to look 'right' on a miniature. So I did the tabard dark, and made the skin more brown - so sue me LoL
The rifle isn't quite "right" but in Beneath the Planet of the Apes, a couple of the Ape Gorillas have Machine Guns - so I can live with that.
It was an armed Minion body, with the "ray-gun" look filed down and shaped to make it look more like a Machine Gun, and Ape failed Experiment head, the mouth greenstuffed to look more ape-like, and hair scuplted around covering the ears and the back/sides of the neck.
Lastly, hair was sculpted onto the back of the hands.
It's OK for a first attempt, I'm sure the others will look better.