#1 AJ Styles (WWE, 2016 - present)

"The Phenomenal One" AJ Styles had an incredible run in NJPW before he made his WWE debut 2016. After wrapping up his 12-year stint with TNA in 2014, Styles made his way to Japan to showcase his skills in front of a new audience. In his first apperance, he attacked IWGP Heavyweight Champion Kazuchika Okada. Styles then faced Okada in a title match at Wrestling Dontaku 2014.
Styles shocked the world when he defeated Okada in this match. "The Phenomenal One" also had a terrific showing in the G1 Climax Tournament in 2014, as he lost just two of his ten matches.
Female superstar says she inspired John Cena turning heel HERE
Styles' first reign ended when he lost to Hiroshi Tanahashi, at Kings of Pro Wrestling 2014. "The Phenomenal One" had another run with the title after he defeated Tanahashi at The New Beginning in Osaka in 2015. Styles later lost the title to Okada.
His memorable 2-year stint with the company ended in early 2016; Styles decided to sign with WWE and reach new heights in his legendary career.