"Headpool" originates from another universe where all the Marvel heroes were transformed into zombies. Headpool had a body until it was damaged in a battle.

He briefly made friends with Zombie (Simon Garth) until they parted ways. Headpool somehow made it to the Savage Land where he met his counterpart Deadpool and Dr. Betty Swanson.

Deadpool: Marvel, what did you do with me? I know I looked awful before, but even I think this is a little disgusting, and that's your own merc with a mouth talking here!

Headpool has appeared in the following comics:

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• Marvel Zombies 3 #1-4

• Deadpool: Merc With A Mouth #1-13
• Prelude To Deadpool Corps #4-5
• Deadpool Corps #1-