The Secret Weapon (1963)

This short begins with KingSize in conference with his financial minister when a coded message arrives warning of an planned invasion by cats from the Planet Feline pronounced Fa Lean A call for Space Mouse is dispatched He appears in the conference room instantly The king orders him to go to Feline disguised as a cat and destroy their rocket ship Space Mouse chooses a Siamese cat disguise Before he leaves though KingSize hands him a pill telling him to swallow it if he gets into inescapable trouble When Space Mouse wants to know what the pill will do King Size claims all he knows is that all secret agents take along some kind of pill for emergencies