Booker and Sheldon

Booker and Sheldon are characters from Garfield and Friends. They are a set of chick twins riased by Orson Pig after their mother went on strike. Booker is named after Orson's love of books (personally, he's glad Orson doesn't like kumquats!) and Sheldon prefers to stay inside his eggshell to avoid the dangers of the outside world.

Counterparts

 * Bill and Ben (Thomas the Tank Engine and Friends)
 * Sunshine and Grampus (TUGS)
 * Miles "Tails" Prower and Rocket the Sloth (Sonic the Hedgehog)
 * Private Meekly and Mac/Pockets (Wacky Races/The Perils of Penelope Pitstop)