Dr. Seuss's ABC/Cyberchase

Cast

 * Girl as Jackie
 * Ichabod as Matt
 * Itsy as Inez
 * Bubble Boy as Digit
 * Pops (from Regular Show) as Buzz
 * Phil DeVille (from Rugrats) as Delete
 * Discord (from My Little Pony: Friendship is Magic) as Hacker
 * Googoo Goggles as Dr. Marbles
 * Princess Atta (from A Bug's Life) as Motherboard
 * Papa as Slider