OK, I made the male and female characters 2 pixels taller (they seemed a little too short) and edited her hat a bit.
Anyway, on to the new character. The first one is made to match the original design and the second one I made a slight redesign. I assumed that he's the rival and if so his outfit seemed a little too similar to the male's (Polo shirt and brown shorts), so I changed it to like blue jean shorts and a t-shirt. Also the male's shirt is split vertically into two colors and the female's is split horizontally, I thought it would make sense to split his shirt as well, diagonally.