I

Printable ASCII characters
~	!	@	#	$	%	^	&	*	(	)	_	+	space
`	1	2	3	4	5	6	7	8	9	0	-	=	{	}	|
	Qq	Ww	Ee	Rr	Tt	Yy	Uu	Ii	Oo	Pp	:	"	[	]	\
	Aa	Ss	Dd	Ff	Gg	Hh	Jj	Kk	Ll	?	;	'	Ctrl
	Zz	Xx	Cc	Vv	Bb	Nn	Mm	,	.	/	<	>	Alt

In NetHack, the letter I serves the following purposes:

• i represents an imp or minor demon:
  • i manes
  • i homunculus
  • i imp
  • i lemure
  • i quasit
  • i tengu
• I represents the detected position of a monster that is invisible or otherwise cannot be seen by you (e.g. detected via clairvoyance).

• Press i to bring up your inventory.
• Press shift + i to bring up a specific part of your inventory, based on object type or beatitude.

Historical uses

In Hack 1.21, a variant of Jay Fenlason's Hack, ice balls used the i glyph - the I glyph was not yet assigned to a monster. In the variant Hack for PDP-11, the i glyph is given to the imp, while the I glyph is given to the invisible stalker - both monsters retain their glyph for their appearance in Hack 1.0, with the invisible stalker being given its current name to avoid redundancy when reporting actions related to invisible monsters.

The imp retains the i glyph to the current day, while the invisible stalker used the I glyph as late as NetHack 3.2.3; in NetHack 3.3.0, the glyph is given its current use, and the stalker is moved to the elemental monster class, E.

Variants

SLASH'EM

SLASH'EM introduces some new monsters that use the i glyph:

• i imp or minor demon:
  • i dretch
  • i rutterkin
  • i nupperibo
  • i blood imp

UnNetHack

UnNetHack introduces one new monster that uses the i glyph:

• i uranium imp