“Still, if some are occasionally begotten from demons, it is not from the seed of such demons, nor from their assumed bodies, but from the seed of men, taken for the purpose; as when the demon assumes first the form of a woman, and afterwards of a man; just so they take the seed of other things for other generating purposes.” –Thomas Aquinas
As near as I can tell Labyrinth Lord does not have stats for a Cambion, so even though the Race Class I present here isn’t anything like the Advanced Dungeons & Dragons race… I don’t care 🙂 Classic AD&D Succubi can be Psionic (as per the Monster Manual). Note that this class is for LL without the Advanced Edition Companion, strait up B/X goodness, and making use of PX1 Basic Psionics Handbook.
[Race Class] Cambion
Cambions are the product of a demonic long-con to birth a race of true Demons native to the Prime Material Plane (PMP). In the complicated planar loophole a non-native female Succubus takes the genetic material from a native male (demi-)human(oid) of the PMP, corrupt it, and then an Incubus uses it to create a child with a (demi-)human(oid) of the same species, the resultant PMP-native Cambion then engages in an elaborate breeding program to decrease the lines humanity and increase its demonic nature. Because Demons are chaotic, this often goes to tits, leaving plenty of Cambions to fend for themselves.
PC Cambions resemble humans, but possess scaly red skin, horns, and sharp teeth.
Restrictions: Cambions use 1d6 to determine hit dice and advance in level as a Mystic, they may use any weapon, and armor, but are restricted to leather armor when using thieving abilities. Cambions advance in attacks as a Thief/Cleric and save as Thieves. Cambions can use any magic items allowed to Thieves or Mystics, but due to their demonic taint they are unable to use items not usable by creatures with a Chaotic alignment. Any spells and psionic abilities which detect a characters alignment will detect the Cambion as Chaotic, despite the Cambions alignment. Cambions are restricted to the 7th level of experience.
Special Abilities: A Cambion has a base AC of 7 due to their scaly hides. At all times a Cambion is shrouded in an illusionary glamor that makes them appear to humans, spells such as true seeing can pierce the glamor, and it can be disbelieved by anyone who knows the cambion for what it is. In addition to Common Cambions can speak the language of their Demon forefathers.
Telepathic Psionics: Due to their heritage Cambions have a unique relationship to Telepathy. As Cambions rise in level they gain access to Major Sciences and Minor Devotions in the Telepathic (heart) discipline as per a Monk of equal level.
Thief Skills: Cambions can Climb Walls and Hide in Shadows as a Thief of equal level.
Also the movie Incubus is pretty sweet.