Ambush Cat, although a member of S.I.D., is not an average Super-Cat.  He used to be able to stand on two legs, like all "normal" S-Cs.  However, when he chose to zap himself through the dimensional portal onto this planet, something went wrong.  Now, his personality and habits have changed; he now walks on four legs and has developed a spectacular jumping ability.  Also, although he thinks and communicates like a human, he is now the size of a small panther.  Not removed from him, however, was his penchant for using hit-and-run attacks to full advantage, as well as giving a new meaning to the word pounce.  His nickname, given to him by Empress Frieda, is "Shadow Cat", and he has no problem living up to it.  To add to his sneaky ability, he recently acquired the power to phase his body right through solid material.   His dimensional travelling has given him a wide array of talents, so no one in S.I.D. knows the full extent of these.