I like that K.Rool is just an unapologetic asshole, he doesn't secretly care for his underlings the same way Bowser does, or have a begruding respect for his nemesis like Eggman.
K.Rool is just an asshole who genuinely despises not only DK, but apparently all of primate kind, humans included, for no other reason than sheer spite and greed and nothing would make him happier than to wipe them out from the face of the world simply because he can.
Also I've been rewatching the DKC cartoon after lord knows how many years, and it's very funny how K.Rool by far and away the best thing in it