Sinestro,

Once known as the mightiest of the green lantern corps...He wielded his ring with great strength and will, but let the power curupt him. He is now the mortal enemy of hal jordan and the green lanterns. Harnessing the emotion of fear and the yellow ring. Also controls an army of yellow lanterns...
If you haven't rented or bought green lantern's first animated movie, first flight showing their origins, I strongly suggest you do. Worth buying.

In brightest day in blackest night> this is how I made him>

1. Yusing abin-sur as a base from the new lantern box set, I took the already crazed looking character out, sculped a mustache from apoxie sculpt yellow. Then molded the hair and carved waves for hair. Painted color with chaos black citadel paints.