Li'l Devil

Mad Batter is a creature seen in A Link to the Past and Link's Awakening. While his name is never mentioned in game, in The Legend of Zelda - Link's Awakening Player's Guide, he is referred to as the Mad Batter. As the Mad Batter's name implies, this creature appears to be a bat. He sleeps in altars found in underground caves, and Link may awaken him by sprinkling Magic Powder on the alters. The bat creature is known for providing Link with upgrades to punish him, but he inadvertently helps Link out.

A Link to the Past
In A Link to the Past, his alter is found in a hole next to the Swordsmiths' house. The hole can only be reached by pounding the stake blocking the way with the Magic Hammer. Once inside, Link can go north to an altar and sprinkle the Magic Powder. An angry bat will appear and scold and thank Link for waking him. This confusing shift in his dialogue continues until he finally cast a spell on Link, halving his Magic Meter. In reality, this causes Link to consume half the magic power he normally would with pertaining items.

Link's Awakening
The "Mad Batter" shows up in three different locations throughout Link's Awakening. He serves the same purpose wherever he is seen: to increase Link's inventory. This time, his altars look like lamps. When Link tosses Magic Powder on them, the creature will appear, upset about being awakened from his sleep and speaking with the same mannerisms as he did in A Link to the Past. Depending on the location of the altar, the Creature will increase Link's capacity for carrying Bombs, Arrows, or Magic Powder, thinking he's troubling the hero by burdening him with more equipment. The altars are located in the Mysterious Forest, Martha's Bay, and Tal Tal Heights.