Deadpool Annual #1 2013

Deadpool Annual #1 (2013) reveals the origin of Deadpool's distinctive white caption boxes. In this issue, Deadpool attempts an assassination, but his efforts are comically thwarted by various heroes, including Spider-Man, Thor, and Luke Cage. The story culminates in the revelation that the persistent inner voice belonged to Madcap. This issue is notable for providing a definitive explanation for a long-standing characteristic of the Merc with a Mouth, making it a key moment for collectors interested in Deadpool's unique psychology and continuity.