While Jim Harris might not have had much actual wrestling ability, or the eloquence required to be a good talker, wrestling impresarios Jerry Lawler and Jerry Jarrett never let that kind of thing get in the way of pushing someone into the main event. Hell, it was what Lawler's entire career was based on.
Thus, the 6 foot 7 inch, near-400 pound Mississippi native was transformed into Kamala, the Ugandan Giant. Because if he's big and black, why wouldn't he be an inarticulate, loincloth-wearing cannibal covered in ridiculous bodypaint?