Torasu belongs to Nige Tyran.
He was given to Nige by his parents while he still lived on Bajor. They
got him as a kitten from a ferengi trader. As they had never seen a cat
before, they thought it would be an interesting gift. When Nige left for
Starfleet Academy, he left his cat with Dinara Jin, and when she left,
she left the cat with Niges parents.
Torasu, is currently aboard the USS Ronin along with Nige and Dinara. However Captain Evans does not like animals, and therefore doesn't usually allow them on his ship. Torasu has recently been discovered and now has limited access to certain parts of the ship.
While transporting the Gemini
Device, Torasu managed to inadvertantly activate the device and created
an evil duplicate of himself.