Dispater

& Dispater
Difficulty	40
Attacks	Weapon 4d6, spell-casting

& Dispater
Difficulty	40
Attacks	Weapon 4d6, spell-casting
Base level	36
Base experience	1923
Speed	15
Base AC	-2
Base MR	80
Alignment	15 (lawful)
Frequency (by normal means)	Unique
Genocidable	No
Weight	1500
Nutritional value	500
Size	Medium
Resistances	Fire, poison
Resistances conveyed	None
Dispater: can fly. has a head, a couple of arms, and a torso. can see invisible creatures. is poisonous to eat. does not eat. (*) is not a valid polymorphable form. is a demon. is an overlord to its kind. is male. is normally generated hostile. can follow you to other levels. is nasty. can pick up weapons and food. wants the Amulet of Yendor. has infravision. can be seen through infravision. appears only in Gehennom. never leaves a corpse.
Reference	monst.c#line2704

Dispater, &, is one of the demon princes. He is lawful and has no lair. A spellcasting monster may summon him in the Gehennom with the summon nasties spell, or a lawful demon (usually a prince; Asmodeus, Baalzebub, or Geryon) can gate him in. He is generated with a wand of striking.

Dispater has a lot of hit points, great magic resistance, and powerful spell attacks. In addition, he resists fire and poison. He'll follow you to other levels and try to steal the Amulet.

He will not generally use his spellcasting attacks before he uses up his relatively harmless wand of striking. Therefore it is a very good idea to kill him as quickly as possible.

SLASH'EM

In SLASH'EM, all demon princes have lairs. Dispater's lair is located between levels 10-15 of Gehennom.

Encyclopaedia entry

Dispater is an arch-devil who rules the city of Dis. He is
a powerful mage.