With Futurama, there is a tendency to try to map characters to similar characters on The Simpsons. Thinking along those lines, Kif would probably be the Smithers of Futurama. Which would make Zapp the Montgomery Burns.
Star Wars Miniature Duros Scout and added some green stuff to make his uniform. I'm not sure why, but the Duros Scout mini looks kind of depressed, which seems just right for Kif.