Orogs within an orc community quickly rise to leadership positions within their clan, although in orc armies the orogs will segregate themselves into all-orog military units. Orog military units are highly organized, tactically superior, and far more dangerous than those of normal orcs.

 

Water orcs are a society who live in touch with the elemental plane of water or by the ocean. These orcs follow a path very similar to their green-skin cousins as brutal raiders and fighters. Water orcs exemplify the water-born creatures turned to evil. Though slow to reach decisions, once a water orc chooses a course of action its resolve is harder to shift than a tidal wave. 

 

In the depths of the Underdark, there is a race of purple orcs. They are fully attuned to the dark, looking purple in the light, but in the shadows they are nearly invisible. but in the Underdark stealth and strength won't save you alone and as such, they are naturally weaker than their overworld counterparts, but they are far more clever. as such in their home they are far more frightening to any weary traveler than any orc of the daylight.