 They also convert Nor-Kan's automobile into their "Nightmobile", and use "jet-belts" to fly into battle.In "Jimmy Olsen" #69 (June 1963), "The Dynamic Duo of Kandor" introduces Nightwing's dog Nighthound.In "The Feud Between Batman and Superman" in "World's Finest" #143 (August 1964), Batman and Robin themselves visit Kandor with Superman and Olsen and the two Dynamic Duos team up.