Yup, what they said. I had a half-bred character most people didn't realize was such until they RP'd with me a while and got the story out, but he was a half elf, half elf half barbarian raised in an elven enclave. He was a celestial mage, but in deference to his father's tribe and to the way he was taught magic, was a pure elementalist. Also, had the elf makeup and the half build for archery, but never purchased any of the resists to symbolize my weakened elven blood (my choice, but plot liked that bit). It can be a lot of fun, just remember that it very specifically states no character can have **** as a part of their background, so no half troll dwarf children as a result of a raid on your families village yada yada yada.