Alu-fiend
From Ardrana
Alu-fiends, the horrid female offspring of succubus and Human, look like comely Human females with attractive, powerful features. Only their sharp, upsloping eyebrows and wings indicate the truth.
Alu-fiends usually communicate using telepathy, but can sometimes speak additional languages.
Note: Alu-fiends originally appeared in this form in the Planescape Monstrous Compendium for the AD&D game from TSR. Their use here is for the purposes of providing context for the campaign only.