Damn, always thought Haer'Dalis was an elf. Or at least i remembered it that way.
A bit off topic, in lore are/were thieflings' looks influenced by those of their parents (if they're not thieflings themselves)? If i remember correctly their godly-counterparts, aasimars, could look like any race depending on their parents.
Which kind of begs the question if those two 'races' are actual races right now? I've always been under the assumption they worked like sorcerers, latent genes or whatever and all that.