[quote=@Primal Conundrum]
I've actually never seen anything about them being a blend of two species. Everything I saw about Elans is that they're normal people who underwent a ritual performed by other Elan to transform them into one, with nothing said that it's a mash together of two races.
[/quote]

It was in my friends D&D book, he told me about them. They get no racial benefits because they get all negative and positive effects from the two races and -1 Charisma for being Elan