Deadpool #21 2013

Deadpool #21 (Marvel, 2016) features a dual narrative. The first story explores Deadpool's unique take on the Christmas spirit alongside Bob, Agent of Hydra. The second, notably written in iambic pentameter, delves into the origin of Madcap. This issue is significant for collectors as it introduces Madcap, a sadistic character who was once part of Deadpool's psyche and later becomes a prominent figure in the Deadpool mythos, making this a key appearance.