I run a webcomic which features 90% male characters... xD I try to make more girl characters, though, right now there's only 3 planned while there's 9 (important) male characters. Yikes! Other than that they're pretty different. Another thing though; whenever I make a story about two male lead characters, these two characters tend to be very alike two other characters in another story. Like, the lead characters are always the same in personality, but have different appearance in each story. Durr! Got to get better at that..