Alu-fiend

Alu-fiends were the product of successful procreation between a succubus and a male mortal (usually human). The male equivalent to an alu-fiend was generally called a cambion. Successive offspring from either (with mortals) were demonic tieflings.

Description
Females were, generally, attractive or beautiful, going to great lengths at times to conceal their needle-like teeth and diminutive wings. They often possessed a high degree of sexual proclivity. Males, however, were harder to distinguish, as its "cousin", the cambion (produced from a female mortal), possessed many of the same "abyssal" traits. This led to a diminishing use of the patrilineal- and matrilineal-influenced terms as a whole; rather, products of both partnerings were considered "half-fiend".

Occasionally when a Succubus/Incubus seduces a humanoid, they refrain from murdering the poor soul for some reason (it's almost never through compassion; usually it's because they were slain or called elsewhere by a greater fiend before they could complete the deed). Whether it is a male humanoid or female one, both unions with a Succubus/Incubus have the potential to create an Alu-fiend. From its hellish origin, the Alu-Fiend is gifted with an innate ability to deceive and/or beguile others. They also have a need for companionship like no other race does. Like their demonic parent, an Alu-fiend craves interaction as much as they crave air. Unlike their demonic parent, however, their desire for socialization is not exclusive to sex. Any form of social interaction that their mortal half might enjoy, becomes a need as immediate as any other form of sustenance. They are practically a race of social butterflies. Because of this, sometimes an Alu-fiend or Cambion (their male counterpart) will reject their evil origins, and seek to use their powers for good.

Notable Alu-Fiends

 * Aliisza
 * Anderia and Estellia, the alu-fiend allies of the nabassu Viscaris

Though apparently not the daughter of a succubus, Graz'zt's daughter Thraxxia appeared in the form of an alu-fiend.

Background
Alu-fiends, also referred to as alu-demons, first appeared in the Monster Manual II 1st edition. They were described in the Monstrous Compendium Outer Planes Appendix and the Monstrous Compendium Planescape Appendix. While their exact statistics varied slightly, the general concept as the offspring of a succubus and a mortal male remained true.

Although alu-fiends were mostly evil in 2nd edition, in 3rd edition at least some of them were chaotic neutral.

In the 3rd-edition Dungeons & Dragons, half-fiends are presented as a more general template, in lieu of specific entries for each instance. There was no specific publishing of an alu-fiend template by official sources. However, a half-succubus template was included in a Dragon magazine and in a web article written by Robert Wiese, on half-fiendish variety, that appears on the Wizards of the Coast website.

Appearances

 * Adventures:
 * Hellgate Keep
 * Card Games
 * Blood Wars