Cassandra the Cruelest Kitten is the antithesis of Apollo the Super-Pup. She wrecks things and make others upset while Apollo the Super-Pup comes to save anybody in danger.
Cassandra, as shown in the TV show, takes the appearance of a typical Siamese cat. She has cream fur, with darker lavender extremities and slanted light-blue eyes. The kitten also has a black collar with a 'K' attached at the center.