Cait Sith is a fairy that takes the form of a cat. Its name means "fairy cat." The Cait Sith can converse in human tongues and walk on two legs, making no sound as it moves. It normally lives as a cat that travels back and forth between the cat kingdom and the human world. It has a white star-shaped mark on its chest. The Cait Sith appears in Irish and Scottish legends and served as the model for Puss-in-Boots.
A Cait Sith is automatically added to the party after entering Idea Space for the first time.
Shin Megami Tensei IMAGINE
Cait Sith appear on Suginami field and within the bronze and silver levels of Suginami Tunnels. A larger field boss variant plays a role in one of the earlier acts. Cait Sith appears as an NPC during the Foreign Country in the Woods quests and in the lower levels of Second Home.
Shin Megami Tensei V
"A fae beast from the Scottish highlands whose kingdoms can be found in tree hollows or abandoned houses. Dog-sized, they have white tufts or hair on their chest, green, intelligent eyes, and are even capable of understanding the human language. Though they usually stick to their territory, some have been known to live with humans as normal black cats. They are generally peaceful, but should a human treat one poorly, they will forcibly take that human to their kingdom."
—Shin Megami Tensei V lore
Cait Sith is a member of the Beast Race and can be found primarily in Hamamatsucho, with other locations including Akabanebashi and the upper area of Shiba.
A horde of Cait Siths can be found in Apsaras' refuge, with one displaying direct respect to Apsaras in conversations, even referring to her as "Lady Apsaras."
A Cait Sith may be found in West Shinbashi, discussing invaluable treasure with other demons. Cait Sith is specifically interested in fish bones, and has strong pride in his. Although he says it's of no compare, he points out that something that could surpass it would be soda. If the protagonist has one Soda relic on him, the protagonist will show it to him without giving it away, in which case the Cait Sith will recognize his victory, rewarding him with 2 Ox Bezoars.
If Cait Sith is in the protagonist's stock and attempts to speak with Nekomata, Cait Sith will interject and begin a conversation, resulting in Nekomata leaving and the battle ending.
[Cait Sith stepped forward and began talking to a demon!]
Ho there, maiden fair! I don't suppose you'd... care to have tea with me?
You and I are both felines of the world... Let us discuss grand, worldly affairs! Trivial amusements! Or nothing at all!
Of course, being a gentleman myself, I would be happy to prepare a drink fit for such a lady... My prized blend of catnip tea!
... Uh, you're not making any sense. Who are you?
Ah, my sincerest apologies! I really ought to have introduced myself first... I am Cait Sith. A dauntless feline hero, and wanderer of the netherworld!
O... kay...? Thanks for clearing that up, I guess? So, what do you want?
Well... I was rather hoping you might join me for tea.
I mean, you seem super shady. You talk weird, and you definitely dress weird.
Shady? Why, nothing could be farther from the truth, milady! You may not think it to look at me, but I preside over my own kingdom!
Wait, really...? No way! So, like, where is this kingdom of yours?
Inside the gnarled hollows of trees, and abandoned houses.
Wow, gross AND lame!
Well, I never! They say "home is where you make it," no!?
Not if it's just a delusion. My home's gotta be real, and it's gotta be comfy. Before I became a demon, I used to be a housecat in this merchant's fancy mansion in the classy part of town. I'm not gonna settle for anything but the best food, the best clothes, and the best home.
The food and shelter I can understand, but... what manner of housecat needs clothing?
Says the cat wearing a stupid ren faire costume! Yeah, no way in hell I'm going out with you. See you never.
[Cait Sith was shot down...]
DemiKids Light & Dark
"A fashionable, feline fairy who is given to spouting polite phrases of wisdom."
"A cat fairy of the highlands of Scotland, said to have their own kingdom inside hollow trees and deserted houses. They are about the size of dogs and covered in black fur, except for their white chests. Their green eyes shine with intelligence, and they can understand human speech. They normally live in the kingdom, but there are times when they live amongst people as normal black cats. They are relatively gentle fairies, but when a person torments a cat, the offending human is dragged off to Cait Sith's Kingdom."
—Devil Survivor 2 compendium
Devil Survivor 2 The Animation
Cait Sith appears as a demon under the ownership of Airi Ban. This animated version of Cait Sith seems to specialize in Force attacks, being able to send out powerful blasts of Zan from its sword at a rapid pace.
It was first summoned (alongside Jungo Torii's Neko Shogun) in a scuffle against a rebel mob in Nagoya's JPs headquarters, and proved itself to be powerful demon, thanks to how fast it eliminated the opposing demons. It was also used to fight Phecda, though its attacks seemed to have no effect on it, and was destroyed alongside other demons by Phecda's beams.
It was later used to fight off Megrez, but thanks to Megrez's special recovery powers, Cait Sith's attacks were easily shrugged off until Airi summoned Lorelei to replace it.