Eyecat

History
Some sort of strange feline creature, Eyecat found itself at the bottom of the food chain in its home world. Tired of being kicked around and nearly eaten by beasts much stronger than itself, the little monster fled at its first opportunity, squeezing through a rift between planes that had been opened to summon some of its more powerful kin. After a tumultuous journey through the layers of space and time, it found itself on a strange new planet... One populated by humans, covered in water, and containing awful creatures called Dogs.

This would become Eyecat's new home, as it found that most humans lacked even the most basic telepathic or telekinetic abilities, giving it ample prey to terrorize and a newfound sense of power. It wasn't until it came across Addled Doctor that Eyecat realized that there were still creatures on this new planet to be feared... But, rather than fleeing, the clever little cat decided to make an alliance with the good Doctor, happily making itself a new home in the Bay House.

... Some might consider this alliance to be more of an owner/pet arrangement, but Eyecat prefers the term 'cohorts'.

Personality
Eyecat is very aware that most people consider it to be 'cute', and uses this fact to its advantage. It's a manipulative creature that prefers to let others do the heavy lifting so that it can laze around and live the easy life, though it can be moved to act by the promise of delicious 'treats' (read: souls) or a good petting.

It also seems to enjoy playing games that allow it to feel powerful or intelligent... But not as a way of making up for what it lacks in reality, of course. That would be silly.

Abilities
Telepathy: A power that even the lowest worm in its homeworld possesses to some degree, telepathy is what Eyecat relies on for speech. It's not exactly perfect at the art, however; its voice comes across as garbles and scratchy, not unlike an old radio in between stations.

Regeneration: The only part of Eyecat's body that can be truly harmed is its eye. The rest of its physical form is a sort of solid goop that, even if completely destroyed, will begin to reform around the eye over the matter of hours or days.

Trivia

 * Though one might assume Eyecat has no mouth, it can form one just about anywhere on its body- this is how it eats.
 * In addition to the Doctor, Eyecat is especially fond of Alistair Verdun-- mostly due to the feline urge to sleep on the many, many books the librarian watches over.