Not-So-Cats

"Nazi...cats? Ya know what, let's put it that way. Nazi Cats. Sounds like something my Granddaughter might say."

Not-So-Cats (or Nazi Cats, as said by Rose Tyler) are demon cats, bent on world domination.

Biography
The Not-So-Cats first appeared in the episode, Cat Videos. They literally crawled from the depths of Heck Itself to have revenge on it's owners, and the rest of mankind. However the evil NSCEAHD (Not-So-Cat Empire Against Humans and Dogs)'s plans were foiled by the Doctor and Rose Tyler when they the NSC's own "Super-Powered Sonic Screwdriver" on them, killing most of them, turning them into ghouls forced to limbo. But that was only SOME of them. They're more out there. You might even have one. Sitting on your bed. Right now.

Early life
Most of these killer kitties living years were rather as strays or meanies. Most of them were put down one way or another, so then they wouldn't hurt anyone with their random acts of rage. As a result they went to a place called Heck Itself, where they were used as weapons of torture. Eventually, they discovered Time Rips which would allow them to cross over into the living world. They formed the NSCEAHD and plotted their evil plan...

Fake Mice
Computer Mice that they can posses to shoot super-charged lasers at people.

Play-Place Cannon
You know those Cat Play-Places? Well, give it a nuclear-powered canon that launches poison hairballs.

Super-Powered Sonic Screwdriver
A giant S.S. used to shoot super-lasers that can destroy buildings at a time.

Personality and traits
Most Not-So-Cats are vicious and cruel, like actual cats.