Ninja

@ ninja
Difficulty	7
Attacks	Projectile weapon, or melee weapon: 1d8

@ ninja
Difficulty	7
Attacks	Projectile weapon, or melee weapon: 1d8
Base level	5
Base experience	64
Speed	12
Base AC	10
Base MR	10
Alignment	3 (lawful)
Frequency (by normal means)	Not randomly generated
Genocidable	No
Weight	1450
Nutritional value	400
Size	Medium
Resistances	None
Resistances conveyed	None
A ninja: has a head, a couple of arms, and a torso. is omnivorous. is not a valid polymorphable form. is a human. is normally generated hostile. is strong. can pick up weapons and food. can be seen through infravision.
Reference	monst.c#line3416

Ninja are notable as the only non-unique, non-randomly-generated hostile monsters to appear on a Quest- the Samurai quest, to be exact. They are a defunct feature, replaced by the Rogue class.