|Alternate Names||Mad Cat, Nightmare Cat, Mad Kitteh, D00M cat|
|Kindred||Unknown, though he is speculated to be related to Basement Cat|
- This article is about the I Can Has Cheezburger's cat. There is also a non-ICHC equivalent, D00M.
Nightmare Kitteh is a white, demonic lolcat. His ears are little more than stubs, and he is quite insane. He is a secondary antagonist in Lolcats The Sequel.
Nightmare Kitteh first appeared in Lolcats The Movie in Pickles' flashback where he is seen killing his father by counterstabbing him with a dagger and makes off to the portal with Basement Cat.He also appears in Lolcats The Sequel where he is about to kill Siren but gets headbutted by Rumble into a lava pit. Note:[he is seen riding Furberus,other: he is nicknamed D00M Cat.]
He is one of the few Evil LOLcats.