Even Superman needs a loyal sidekick. But how did Krypto the Super-Dog become the Man of Steel's best friend? Discover the origin of this superpowered Super-Pet in the this action-packed, POW!-WHAM!-BOOM! chapter book for early readers. action-packed story tells how Ace became the Dark Knight's loyal bat-hound.

"F & P Text Level Gradient, L"--Page 4 of cover. "Superman created by Jerry Siegel and Joe Shuster, by special arrangement with the Jerry Siegel Family."