

The giant penny was involved in a case against the Penny Plunderer and the life size Tyrannosaurus Rex robot was from a case involving a theme park island with robot dinosaurs. Of note, the Batcave is home to an atomic pod, giant penny, a giant Joker card, and a Tyrannosaurus Rex robot. Over the years, Batman's Batcave grew in size to accommodate new technology and various mementos from cases that he solved. The passage reveals twin poles that are ridden to the Batcave. Hidden behind a book shelf, the passage is opened by a switch hidden inside a bust. From inside Wayne Manor, passage to the Batcave is located in Bruce Wayne's study. Its entrance and exit is the face of an unassuming cave wall. He used the space to engineer his arsenal and suit and kept a small space to hold them. Generations later, Bruce Wayne re-discovered the caverns. He utilized a series of caverns under the Manor's southwest wing. The Great Great Grandfather of Bruce Wayne took part in the Underground Railroad, which helped transport escaped slaves north. When invoked, the blade was covered in flames, making it an even more lethal weapon.Gotham City's stately Wayne Manor hides a secret.


In the modern era, Excalibur was taken by the Faceless Hunter as a trophy displayed aboard his space cruiser. When the day came, Merlin discovered that when together, Batman and Green Arrow could also extract Excalibur and it successfully defeated Le Fey. Merlin kept Excalibur hidden as a measure of last resort against ogre brothers. Similar to Nth metal, Excalibur also contains properties that allow to nullify magic. When Arthur wielded the sword in battle, he couldn't be wounded. It is said that Excalibur is gifted with magical properties and the source of Arthur's power. The words "take me up" and "cast me away" are engraved on both sides of the sword. In order to prove he was worthy to be king of Camelot, Arthur pulled Excalibur from a stone. Excalibur is the legendary weapon of King Arthur.
