Michael Balk: Voice Over Guy, Einstein, Adventure Man, Archimedes, Thomas Edison, Caveman, Galileo Galilei, Guglielmo Marconi, Harry Houdini, Karl Weatherman, Leonardo Da Vinci, Wally Lewis, Alexander Graham Bell, Benjamin Franklin, Cave Man, Commentator, Doctor, Egyptian, Heath Urban, Isaac Newton, Jules Leotard, Professor Cranium, The Sun, Unexpecting Man, 60's Guy, 80's Dude, Achilles, Adventrue Man, Albert Einstein, Alexander Fleming, Alfred Hitchcock, Alfred Nobel, Alfred Vacheron, Allen the Alien, Alloy Boy, Anaximander, Anders Celsius, Andronicus, Annoying Musician, Ashrita Fuhrman, Attractive Vet, Balloon Boy, Barry the Bat, Barry the Butterfly, Basketball, Bath Boy, Bee, Bill The BrainBuzz Reporter, Bill the Baby, Blacksmith, Boyfried, Brad the Bilby, Brain Buzz Secret Agent, Brain Controller, BrainBuzz Reporter, Bridge Brother, Bruno the Chef, Build It Boy, Cambyses II, Cane the Cane Toad, Car Pool Guy, Carbon Atom, Carl The Camel, Carl Weatherman, Casette Kid, Cat Whisker Guy, Charles Darwin, Charles Kingsford Smith, Charles McIntosh, Charles Richter, Charles Sturt, Chester, Christiian Huygens, Chuck Yaeger, Chuck Yeager, Circus Guy, City Guy, Claudius, Cockroach, Colin the Cone Snail, Comedian Stormy Day, Conrad the Cockroach, Cooking Brother, Coret The Coral, Cornelius the Cave Man, Cpt James Cook, Craig The Crocodile, Craig the Crocodile, Da Vinci, Date Guy, David Belle, Detective Daryl Dog, Dodgy Brother, Dolly the Sheep, Dolphin Student, Doug the Dung Beetle, Douglas Mawson, Dr Watson, Earl of Sandwich, Eddy The Egyptian...