Betsy's Egg

Betsy's Egg is a pet item that drops from Betsy, the final boss of the Old One's Army, when she is defeated in Master Mode (25% chance). It summons Itsy Betsy, which will follow the player around.

Trivia

 * Itsy Betsy is a reference to the popular nursery rhyme "Itsy Bitsy Spider". "Itsy bitsy" also means small, as the pet is a miniature version of Betsy.
 * The item's sprite resembles the Gato Egg and Dragon Egg dropped from the Dark Mage.
 * Itsy Betsy is also a pet found in, the game that the Old One's Army is based on.