I like #11 the most but I would like to see a couple of changes if possible
1) smaller tool box
2) No collar on the shirt
3) left hand to be a fist rather than the index finger sticking up
4) different font for the #5 on the hat and jersey - bit bolder
5) tilt the whole body forward so that it is leaning forward a bit - think of a sprinter leaning forward during the initial stages of a race
I wouldn't mind seeing what another character looks like - I like the overall size and style but just another option.
Aside from that it looks good
Thanks