Spectres of the Last War
Half-Elves are one of the true native races to Khorvaire, being the offspring of humans and elves who both emigrated there and interbred. They even call themselves the Khoravar and half-elves today are almost always the result of true-breeding half-elven parents and not one human and one elf parent. They can be found anywhere that humans are and can hold the same religious beliefs. Half-elves generally don’t practice elven ancestry worship.
Half-Elves can possess Aberrant Marks, the Mark of Storm (House Lyrandar—Windwrights Guild, Raincallers Guild), or the Mark of Detection (House Medani—Warning Guild).
Mechanically, half-elves gain +2 to Constitution and +2 to either Charisma or Wisdom. They can take feats normally reserved for only humans or elves. They give a bonus to Diplomacy for allies and also have the Knack for Success power which can provide any of a number of bonuses once per encounter. Half-elves can see better in low-light conditions.