I found a great old illustration of “Baluchor” from an old Halloween advertisement via James Lileks’ Bleat and thought it would make a great demon prince.

Baluchor, Demon Prince of Evil Astral Monsters

Type: Outsider
Size: Large
Hit Dice: 15 (90 hp)
Armor Class: 22 [+3]
Attack: 2 claws (2d8 + Poison I)
Movement: 40′ (Fly 60′)
Save: 9; MR 65%
Intelligence: Super
Alignment: Chaotic (CE)
XP/CL: 7,500/18

SD—Immunity (electricity, poison)

SP—Astral projection, confusion •••, darkness II, desecrate, detect good, dimension door, dispel magic, ego whip •••, fear, intellect fortress •••, magic missile, mental barrier •••, mind blank •, mind thrust •••, nightmare •, phantasmal killer •, psionic blast •••, psychic crush •, read magic, shield, suggestion, symbol (any), telekinesis (2000 lb.), teleport without error (self + 50 lbs.), thought shield •••, tongues, tower of iron will •, unhallow, unholy aura, unholy word, wall of force

Baluchor is the demon prince of evil Astral creatures, paid fearful obeisance to by the kith-yin, mind blasters, night hags and nightmares.

Baluchor’s antennae can pick up mystic vibrations (detect good, detect magic) and thought waves (E.S.P.) in a 60′ radius (always active).

When Baluchor rolls a natural ‘20’ on a claw attack while on the Astral Plane, he automatically severs a creature’s astral thread (if applicable).

Three times per day he can open a portal to the Astral Plane or a portal from the Astral Plane to another plane and, in the same round, use his telekinesis ability to attempt to push a creature through it.

Baluchor’s hairy body is host to numerous pests and parasites, so those in melee contact with him for more than 3 rounds must pass a saving throw or contract a disease.

Three times per day, Baluchor can summon 1 nalfeshnee or 1d2 marilith demons. Once per day, he can summon 2d8 kith-yin, 2d6 nightmares, 2d4 mind blasters or 1d4 night hags.