Wikipedia
Rated-RKO was a professional wrestling tag team on World Wrestling Entertainment (WWE) based on the Raw brand. The team consisted of Edge, Randy Orton, and Lita, their valet. The name "Rated-RKO" contains part of Edge's nickname, "The Rated R Superstar", and Orton's initials/ finishing maneuver, RKO.
Edge and Orton formed an alliance in October 2006 to challenge the team of Triple H and Shawn Michaels, collectively known as D-Generation X (DX), who Rated-RKO felt were preventing them from becoming world champions. Rated-RKO would succeed in defeating DX, giving the latter their first loss since their reunion in June 2006. The following month, Edge and Orton became World Tag Team Champions, and Lita left the group after her legitimate retirement.
In January 2007, Rated-RKO lost the World Tag Team Championship, which caused tension between the two. The group officially disbanded in May 2007, after Edge moved to the SmackDown brand. Edge and Orton had occasional reunions until Edge's retirement in 2011.