Maybe it would be like a Bakeneko or a Nekomatta [Japanese ghost cats]: pale, maybe even transparent fur and glowing eyes and the ability to pass through walls [which in battling, could mean that it avoids hits easily or something]. As for its name...Feliphantom or Nekogen [gen means phantom in Japanese]?
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Quote:
A memory is something that has to be consciously recalled, right? That's why sometimes it can be mistaken and a different thing. But it's different from a memory locked deep within your heart. Words aren't the only way to tell someone how you feel.” Tifa Lockheart, Final Fantasy VII