Ahahaha, GOTCHA!
You're not posting this as a decoy, now do you?
You know that as soon as my sun elf finds out that there are two fey'ri in the party, he's going to have a fit?
Well, anyway. Tongues of the Seducer (the feat that allows a fey'ri to have a succubus' tongues ability) is officially in (Antimon allows it AFAIK), so if you don't want to be left out when others are speaking, take that.
The rest, as Darkness said, depends on the class, at least as far as feats and skills are concerned.
There are a couple of concerns for a fey'ri (as seen with Antaros):
You don' walk around in your true shape. These guys aren't exactly popular, especially not with elves. The Change Shape ability will take care of that. Also, you shouldn't use your last name, as the few families of fey'ri are well-known to many elves, especially those who know a lot (and that's many elves, with wizard being their favoured class).
You might want to get ranks in disguise and bluff, to hide your true nature better.
And then, most fey'ri hate moon and wood elves with a passion, because it was them who imprisoned them for so long. Their demonic heritage and the fact that they are all from the same realm with the same disposition means that they have a very strong inclination towards both chaos and evil, so your character should be CE (and the fact that it will be an all-evil campaign only reinforces that). NE would work, too, but LE should be too much of a stretch.
But beyond that it depends on the character class and concept.
Ah, and if you're not the faramir0 I think you are, then please forgive me for the confusion. In both cases: Welcome to the Boards.