At his heart, Cat is a type 1 phaser linked to a TR-970 tricorder. Something like 70% of his internal mass is made up of bio-neural gel surrounded by a bio-mimetic "skin" that can spontaneously grow "fur" -- actually a carbon fiber composite. Cat is approximately 80cm in length by 9cm in width, but can alter its size and shape at will, from an 8 meter "rope" capable of supporting 110kg, to a spherical shape approximately 25cm in diameter. In his natural form, Cat appears as a semi-amorphous white housecat with pale blue eyes. The eyes are faceted: one is the emitter crystal for the phaser, the other the scanning crystal for the tricorder.

In Cat's belly section is a hidden port capable of accomodating an isolinear rod and a recharging port. A subspace transceiver and locator is hidden in the tip of his tail, and allows Cat to communicate with other tricorders or computers. Cat also contains a subcutaneous transponder and communicator, as well as several saurim krellide power cells. Cat is often the only piece of "equipment" that Wallace carries with him on Away missions, along with a PADD to receive Cat's tricorder output.

Cat's morphing ability combined with his internal phaser makes him an impressive weapon -- like a whip with a phaser tip. Because Cat can lock onto targets with his internal tricorder, he almost never misses.

Cat's programming is similar in nature to a Soong-type android, but not nearly as complex. Wallace chose the mannerisms of a cat for its programming because his own family pet cat was lost with his mother and father aboard Dancer. Cat has been active for approximately 10 years now, and is slowly developing in both his cat "imitation" and unique personality.

Cat is intelligent, but not sentient. However, there are several mysteries about him that even his creator can't explain. Wallace isn't sure how Cat can make sounds, but he can: Cat can purr and hiss, and is working on a meow. Cat isn't supposed to like being touched, but he does. When he "sleeps" -- actually recharging his power cells -- he likes to do so draped over Wallace's shoulders. Cat isn't designed to function in zero-gravity environments, but he can: he morphs "wings" that he uses to fly.