Deadpool/Wade Wilson, is a mercenary in the Marvel series who is known for their comedy and fouth wall breaks in the series. He was created by Rab Liefeld and Fabiam Nacieza to be a parody from the DC characater, Deathstroke/Slade Wilson. After first appearing in The New Mutants #98, he grew popularity fast. He also first appered in the movie, X-Men Origins: Wolverine who was played by Ryan Reynolds.
Deadpool showed up in many comics and movies. The movies Deadpool were in was Deadpool, Deadpool 2, Deadpool and Wolverine, No Good Deed, Once Upon a Deadpool, Deadpool and Korg React, and X-Men Origins: Wolverine. He also has comic series such as, Deadpool: The Circle Chase, Deadpool, Cable & Deadpool, and many more. The series is still being made to this day. Deadpool has also made apperances in other comics in the X-Man series and X-Force series.
