Lordcat

Lordcat is a huge fat cat with an unknown gender. He/she is a warrior of StoneClan in Wild Prophecies of Death, and is described as being able to fight like a god.

Wild Prophecies of Death
Lordcat is not formally mentioned in Wild Prophecies of Death, but is listed in the allegiances.

Trivia
MagazineDuck says he can "fight like a god."