Dark Bat

Dark Bat (also known as Bat Wings) were a vanity item for Diablo III, added in the PTR for patch 2.4.1, but removed from the live version.

It dropped from Tethrys the Rift Guardian.

When used, it would apply or remove a pair of black bat-like wings.

When obtained, the wings could have been added to the Wardrobe. Only one set of Wings can be used at a time. If equipped, they would have been visible even in character selection screen.

Trivia

 * The name and description of this item may be a reference to the famous Batman quote: "My disguise must be able to strike terror into their hearts".