I don't like him, he presents a very stereotypical nature of homosexuals in visual media. He several times appears to sexually harass Cloud, and at one point perhaps even crosses a very large red line. He quite simply does not give homosexuals a good name whatsoever, and frequently breaks indecency laws, wearing very little at all.

(SPOILER)

Nah, just kidding. Mukki is one of my favourite minor characters in the entire game. For what is quite a dark, heavy game, he breathes some vitality to Midgar.