Tetsuya Tsurugi is a former air force pilot and a member of HSF.
Tetsuya met with Jun Hono at an unspecified time and eventually entered the air force until leaving.
Tetsuya is much more quiet and obedient than his original counterpart. When it comes to relationships, he is much more close with Jun and even has an open relationship with her, though has difficulty understanding her humor. There was some tension between him and Koji Kabuto at first, partly because Koji had a better time understanding Jun's jokes. Later he begins to warm up to him and becomes like a big brother to him.
As a former air force pilot, Tetsuya is an excellent pilot for using the MR-II, the support jet for the Z Mazinger. In addition he is adept in firearms and hand-to-hand combat.