Half-fiend

Half-fiends were the hybrid offspring of fiends and any other creature that was not a fiend, such as humans or dragons.

Description
A fiend's magical nature allowed it to breed with virtually any creature. Spawned deep in the dark, nether planes, these fiendish offspring were abominations that plagued mortal creatures, for demons and devils would bring their progeny along to the Material Plane and loose them upon the world. Sometimes, however, fiends forced themselves on mortal creatures to create evil half breeds. The more depraved creatures are sometimes even willing to participate. Although half-fiend offspring were usually destroyed at birth, some survived to become grotesque mockeries of their mortal parents. All too rarely, though, one learned from and took on characteristics of its non-fiendish parents, turning from its evil heritage. No matter its form, a half-fiend was always hideous to behold, having dark scales, horns, glowing red eyes, bat wings, a fetid odor, or some other obvious sign it was tainted with evil. Never truly fitting into any mortal society, half-fiends were usually loners. On the lower planes, they were mistreated and derided because of their impure nature. Among non-fiends, they were outcasts, hated corrupters of the natural order. Humanoid half-fiends were sometimes called cambions. They often served more powerful fiends or led evil forces on the material plane.

Combat
Half-fiends fought with aggressiveness and battle lust, using their fiendish abilities to best advantage. They enjoyed torturing any enemies unfortunate enough to fall into their hands.

Types of Half-fiends
Some of the more numerous, powerful, or otherwise prominent varieties of half-fiends included:
 * Cambion- A general term used to refer to the result of the breeding of a fiend (normally a devil) and a human woman. They had the general appearance of humans, but with the addition of differing fiendish traits.
 * Alu-fiend- A specific term used for the offspring of a succubus demon and a mortal male. Alu-fiends tended to be very attractive in appearance, but with small, bat-like wings and sharp teeth.
 * Draegloth- A very specific variety of half-fiends, draegloths were the offspring of drow females and glabrezu demons. Draegloths were tall (7-8 ft), with the obsidian skin and white hair of drow but a somewhat hound-like head, four arms like a glabrezu (the larger, upper pair ended in huge claws), and a mane of hair covering their backs and shoulders,
 * Durzagon- Durzagon were the result of the union between a duergar and a devil. They were often revered by other duergar as great leaders.
 * Worghest- The offspring of barghests and goblins. They resembled goblins with barhest-like features (such as blue hair or orange eyes) and had the ability to turn into a wolf.
 * Tiefling- Tieflings were humans with fiendish blood in them. Since they were so numerous, they were often considered a subrace of humans or even a race in their own right.
 * Fey'ri- The result of breeding between elves and demons. Since these half-fiends bred true with each other, the later generations were also called fey'ri. They resembled elves, but with various fiendish traits.
 * Maeluth- The resultant hybrids of the union between a devil and a dwarf.
 * Wispling- The hybrids of a demon and a halfing. It was possible for them to have wispling offspring with each other.
 * Tanarukk- Nasty, brutish offspring of orcs and demons. Tanarukk, like fey'ri, also bred true and were sometimes regarded as a subrace of orcs. They typically had fiendish traits such as scales or horns, and a distinct smell of brimstone surrounded them.

Notable Half-fiends

 * Isair and Madae: Leaders of The Legion of the Chimera.