- Born: 06/22/1982 in Adachi, Tokyo, Japan
- Birthname: Tetsuya Naito
- Height & Weight: 5'11", 225 Ib
- IWGP Heavyweight Championship (3 times)
- IWGP Intercontinental Championship (6 times)
- IWGP Junior Heavyweight Tag Team Championship – with Yujiro Takahashi
- IWGP Tag Team Championship – with Yujiro Takahashi
- NEVER Openweight Championship
- G1 Climax (2013, 2017)
- New Japan Cup (2016)
Naito began training for a professional wrestling career in 2000, initially under Animal Hamaguchi, before joining NJPW in 2004, where he underwent further training. Along with his three IWGP Intercontinental Championship reigns, Naito is also a former IWGP Heavyweight and NEVER Openweight Champion, the only wrestler who has held those three titles. In doing so, he became the first Triple Crown Champion.
He also held the IWGP Tag Team and IWGP Junior Heavyweight Tag Team Champion with former partner Yujiro Takahashi, with whom he teamed as No Limit. In addition to those, Naito is also a two-time winner of NJPW’s premier singles tournament, the G1 Climax, having won it in 2013 and 2017, and the New Japan Cup, winning it in 2016. In 2016 and 2017, Tokyo Sports named Naito the wrestler of the year. In 2020, he finally won in the main event of Wrestle Kingdom against long-time rival Kazuchika Okada and made history by becoming the first man to hold both the IWGP Heavyweight & Intercontinental Championships.
Notable Feuds: vs. Shinsuke Nakamura, vs. Hirooki Goto, vs. Kazuchika Okada, vs. Chris Jericho