Meet Tatewake Kuno, age 17 (the one NOT wearing a leotarde). This poor, confused man has a bit of a problem, he's torn between his love for Akane and Ranma (girl form) who he knows only as the pig-tailed girl. The problem is, both Ranma and Akane hate his guts. He, however, has an ego so big he doesn't know they hate him. He doesn't take a hint when Ranma and Akane boot him away into outer space (as in most anime) after each of his zealous pursuits. He says he is in love with them, but I believe it to be only lust. Kuno is always after some woman or another, though it is usually Ranma or Akane.
Now, I know what you're thinking: Why doesn't Ranma just show Kuno how he can turn into a boy? Well, there is an answer to that. HE HAS! Kuno, hating Ranma (boy type) for taking away Akane from him, accused Ranma of practicing the black arts and enslaving his beloved pig-tailed girl.
Another little bit of information is that Kuno speaks mainly in poetry and Shakespeare quite often. It would be cool if he didn't screw it up.
Please note I have not gotten to Kodachi Kuno (Tatewake's "Twisted Sister")