Batman Annual #23 1999

Batman Annual #23, published in September 1999, is a key issue in the "JLApe: Gorilla Warfare" event. The story features Batman and Nightwing investigating a mysterious new crime boss in Blüdhaven. They uncover a plot involving one of the Simian Scarlet working for Gorilla Grodd, realizing they are the only ones who can prevent global domination. This issue is notable for its tie-in to the larger JLApe storyline and the team-up between Batman and Nightwing, with appearances by Oracle and Gorilla Grodd.