For Koopa Klan Elite, I came up with two characters for the setting. They were Majusi Koopa, chief of a Yoshi tribe, and his right-hand Ukiki Kima (both names are derived from the Swahili words for 'lizard' and 'monkey,' respectively, while Majusi is also a pun on 'majesty'). Unfortunately, I sorta rushed them both out and they sorta turned out a mess there, so I pretty much withdrew them. However, recently, I've seen fit to put them up on F-List, now fresher and free of my *ahem* undue influence. Due to the nature of the site, you'll have to search for them yourself.
Majusi is a Koopa-Yoshi hybrid born of a Yoshi father and Koopa mother. His mother's raising gave him a more modern knowledge unlike the wild and somewhat isolated Yoshis he's now chief of, and he has long since grown tired of their childish antics and wants to learn more about the outside world. Kima is his devoted retainer and primary enforcer, as well as a bit of a yes-man, and occasionally goes out to bring back parts of the outside world for his boss.
Majusi and Kima © me
Koopa, Yoshi, Ukiki © Nintendo