I feel like the name "DK" is enough not to need a nickname...isn't DK a nickname already?!?
Let's face it half the people who say DK automatically think Donkey Kong anyway, which is pretty cool without even trying that hard. Versus some uber forced I'm trying too hard to be cool/tough nickname like Dark Knight, Batman, Mando, BS nickname.
Plus nicknames if anything need to be organic in nature of how they get created.
Any of you guys calling RW Mr. Unlimited (without laughing your butt off or rolling your eyes into the back of your skull)? I sure as heck am not.