Essentially they kept the characters' ideals and worldviews etc. the same. However, the key thing they changed was that they made their characters fully human/dwarf/elf and made the characters mentally unstable. Some characters thought they were reincarnated gods and whatnot even though they were just plain crazy.
We've also had a few uh...other races. Talking bunnies, jaguars, dogs...caravans...

Paul's character Jumahn is actually from an awesome short story Paul's dad wrote yeeeears ago. Even if Paul doesn't end up RPing him, I think I will.