- Not to be confused with Pep, the Chihuahua character.
In its first appearance, "The Great Dime Chase!", Louie Duck bought a can of Pep! from a vending machine in Scrooge McDuck's Money Bin, using a dime he found in Scrooge's office. When he later learned that the dime he used was actually Scrooge's Number One Dime, that began his frantic scramble to get the dime back.