Add Participants From WWE, NJPW, UFC, Or Other Promotions. Already Signed: Josh Barnett, Davit Modzmanashvili, Miyu Yamashita, Natalya (WWE), Tom Lawlor (UFC), Timothy Thatcher, Simon Gotch, Shinya Aoki, Jonathan Gresham, Royce Isaacs, Zack Sabre Jr. (NJPW), Maika (STARDOM), Konami (STARDOM), Leyla Hirsch, Pete Dunne (WWE), Gabe Kidd (NJPW), Karrion Kross (WWE), Karmen Petrovic (WWE), Charlie Dempsey (WWE), J.R. Kratos & Tavion Heights (WWE)