Cranky is the original Donkey Kong, yes, but Nintendo has kind of gone back and forth about whether DK is Jr. or not. Sometimes they say he's Cranky's son (which would make him DK Jr.) and sometimes he's called his grandson, so who knows.
But if he's not DK Jr., then that begs the question: What the heck happened to the guy?
--
http://www.miscupload.com/upload/452457071929141623517416.gif