SKULL-FIRE'S PROFILE

I don't know how to even put in a character, or sprite if I remember correctly. Anyway, I have been looking for tutorials for this for about 2 hours, I have only found character sets and scripts, non of which actually tell you how to do them. But for now I just want to be able to actually put in a character other than the default one from the start. Right now I have a city with one character in it.
Any help would be greatly appreciated.