William Peter Charles Ospreay is an English professional wrestler who is currently signed to All Elite Wrestling (AEW). He is also known for his eight year tenure with New Japan Pro-Wrestling (NJPW), where he held various championships, including the IWGP World Heavyweight Championship. He is the leader of the United Empire and a member of the Don Callis Family stable. Ospreay is regarded by fans, peers, and industry journalists as one of the best in-ring performers of all-time.

The IWGP World Heavyweight Championship is a professional wrestling world heavyweight championship owned by the New Japan Pro-Wrestling (NJPW) promotion. "IWGP" is the acronym of NJPW's governing body, the International Wrestling Grand Prix . The championship was created on March 1, 2021, by the unification of the IWGP Heavyweight Championship and the IWGP Intercontinental Championship. The current champion is Jon Moxley, who is in his first reign.