Ryan Reynolds in Deadpool movie 20th Century Fox

Deadpool is currently running successfully in theatres worldwide and Ryan Reynolds has confirmed that the scriptwriting for its sequel movie is already underway. Deadpool is an R-rated action comedy based on a Marvel Comics character who is part of the universe of X-Men heroes.

Reynolds during a podcast with Empire Magazine (via Comic Book) said: "We are on a script, we are well into a script."

The actor also talked about some of the changes the script for the first Deadpool went through. He said: "We had endless [conversations about other X-Men]. Taskmaster was in the script originally, too expensive. We had versions where we wanted Hugh Jackman in there, we wanted all kinds of cameos from different people but it just becomes a big mess for the studio."

The 39-year-old actor explained: "We went through such hell developing the script and which X-Men we could keep and which we couldn't and it just turned into a nightmare. The studio would just say 'too expensive, too expensive, too expensive' to everyone. So finally we were like well, 'what about Negasonic Teenage Warhead' and they said, 'Negasonic, what?'"

Previously, Hollywood Reporter had reported that Fox had given the green light to a Deadpool sequel and that Rhett Reese and Paul Wernick, who wrote Deadpool, are writing the script for the sequel.

Although director Tim Miller has not signed on to helm the sequel, Fox is intent on keeping the creative team together, said the report. The movie stars Ryan Reynolds, T.J. Miller, Morena Baccarin and Gina Carano in the lead roles.

Deadpool smashed box office records in its opening weekend, landing itself the title of the biggest opening day for an R-rated movie. Its numbers put it among the top 10 comic book movie openings of all time, higher than any of 20th Century Fox's other X-Men-related films.