In my opinion, a lot of these nicknames sound as if the fighter gave it to himself, simply because we seem to many of the "popular" nicknames and their variations, i.e. anything with Assassin. I personally like nicknames that don't serve as anything real intimidating, as if they were real nicknames. Therefore, I like Gumby, Twinkletoes, and Quick. I also like nicknames that roll ahead of the name, like Hollywood Dan Henderson (a great, if obvious, allusion to the former Dallas Cowboy), Handsome Matt Wiman, and, though it's not MMA, Marvelous Marvin Hagler.