In Tolkien's writings, Orcs were cruel, sadistic, black-hearted, vicious, and hateful of most things, particularly of those who were orderly and prosperous.
Orcs short in stature (unless of the Uruk variety) and humanoid in shape. They were generally squat, broad, flat-nosed, sallow-skinned, bow-legged, with wide mouths and slant eyes, long arms, dark skin, and fangs.
Tolkien describes one "huge Orc chieftain" as "almost Man-high." They were roughly humanoid in shape with pointed ears, sharpened teeth and grimy skin. Their appearance was considered revolting by most of the other races.
Orcs made no beautiful things, but many clever ones including machines, tools, weapons, and instruments of torture.
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