Brutal and stupid, Ogrons have two great qualities: they are tough fighters and they are loyal to their masters. Brought out of a primitive, almost Stone Age existence by the Daleks to fulfil a role as mobile, aggressive guards, Ogrons have become mercenaries, hiring themselves out to whoever or whatever needs their services. Yet they are still a primitive people: Ogrons live in cave dwellings on their home planet, which they simply call Homeworld now they have discovered the existence of other planets. Known as Ogros to other civilizations, it is a bleak, rocky planet; it is also home to a large predatory reptile that the Ogrons worship as a god.

Ogrons are about 2.2 metres tall and look like dark-skinned apes. They are largely bald, apart from some long, straggly hair that hangs down from the back of their heads. A prominent bony ridge casts their small, dark eyes into shadow; their heavy jaws heighten their almost neanderthal look. They typically dress in coarsely woven, baggy tunics and leggings, over which they wear a stout jerkin.

Although Ogrons are capable of following orders well, they have no sense of initiative, and often overlook details that their masters consider important. They have gruff, deep voices which are difficult to understand. Although they may be lacking as conversationalists, Ogrons have an intuitive grasp of technology, and easily comprehend the function, if not the workings, of blasters, spaceships and the like.