Climate/Terrain: The Abyss
Frequency: Very Rare
Activity Cycle: Any
Intelligence: Average to Genius (10-18)
Alignment: Chaotic Evil (80%), Chaotic Neutral (20%)
Number Appearing: 1-2
Armor Class: 5 (base)
Movement: 12, Fl 15 (D)
Hit Dice: 2
Number of Attacks: 1
Charm Person (per spell, Alu-Fiend Ability)
Darkness 15' Radius (per spell, Tanar'ri Ability)
Suggestion (per spell, Alu-Fiend Ability)
Danger Sense - 75% to not be surprised (Alu-Fiend Ability)
Immune to non-magical Fire, Lightning and Poison
Takes half damage from Magical Fire, Cold and Gas
+1 or better Weapons to hit, but takes full damage from Silver or Iron Weapons
Dimension Door (per spell, Alu-Fiend Ability), 1/day
ESP (per spell, Alu-Fiend Ability)
Infravision (per spell, Tanar'ri Ability) to 240'
Shape Change (per spell, Alu-Fiend Ability) into a humanoid form of roughly their height and weight
Teleport Without Error (per spell, Tanar'ri Ability)
Telepathy/Tongues (Tanar'ri ability): Can communicate Telepathically with any intelligent life form regardless language barriers.
Takes full damage from Normal, Silver or Iron Weapons
If an Alu-Fiend can somehow hide her wings, she is mistaken for human 70% of the time.
Magic Resistance: 30%
Size: M (6 feet tall)
Morale: Steady (11-12)
XP Value: Normal: 4,000
Genius (L 1-4): 5,000
Genius (L 5-12): 5,000
Note: 10% have Genius Intelligence and are 1st through 12th Level Mage with full Spell casting ability (any school, never specialized.) All carry a weapon of some kind, but 75% Carry Enchanted Weapons (select from page 140 of the 2e DMG, with 15% chance of a Special Weapon.) Armor Class 5 is their base. but 75% Carry Enchanted Weapons (select from page 139 of the 2e DMG, with 5% chance of Special Armor.) Non-special just means +1, +2, etc... Assume all such items were forged on the Abyss. All abilities usable 1/round unless otherwise noted.
Source: 2nd Edition AD&D 2602, Planescape Monstrous Compendium Appendix, page 94
Ed's Notes: The offspring of human and female Succubi. They would therefore be a particularly specific breed of Teifling? I guess?