While watching Gogo Five and some bits of Lightspeed Rescue, Chad is definitely no Americanized Nagare. Instead, he would feel like some awesome blue rangers way back in the Hirohisa Soda era. I felt like he's more like these guys instead of his Lightspeed Rescue counterpart which is cool, considering that it's better to borrow ideas from other shows, not just the Japanese counterpart. Dynaman's Yousuke Shiima is a swimmer and surfer, the first aquatic blue ranger. Ryuta Nanbara is a water sportsman. In the beginning of Bioman, Ryuta can be seen as a water sportsman and his intro shows he is one. Like this guy, Chad is an accomplished martial artist. Chad might be best viewed as an Americanized version of Ryuta.