Characters in The Cat Who Wasn't There

Qwilleran

Koko

Also in The Cat Who Could Read Backwards, The Cat Who Ate Danish Modern, The Cat Who Turned on and Off, The Cat Who Played Post Office, The Cat Who Knew Shakespeare, The Cat Who Said Cheese, The cat who went up the creek, The Cat Who Had 60 Whiskers

Yum Yum

Also in The Cat Who Said Cheese, The cat who went up the creek