How is Wade Wilson in the Wolverine origins movie and then in Deadpool? - Quora
Wade Wilson (film character) - Wikipedia
Concept art for Deadpool in 'X-Men Origins: Wolverine' (2009) : r/Marvel
In 2009, David Benioff wrote X-Men Origins: Wolverine. In this movie, the character Deadpool is given arm-katanas, laser eyes, teleportation, and a sewn up mouth, none of which are in the comics.