BLACK CONDOR

Probably, the only sentai hero who possesses a very unique character.   He was truly a bad, obnoxious guy but we learned to love him as the series flowed.  And believe me  I loved this guy.   I think he is the coolest character of the show. Gai Yuuki was a lone wolf guy who hated being ordered. He was the most unwilling in joining Jetman.  For a meanwhile, he had lots of fistfights with Ryu. Gai fell in love with Kaori.   He felt it when he learned that behind Kaori's fragility, vanity and social status,  she was still intent  to save the earth.   And nothing could ever bit an affection  once you've known that the person you love wants to offer her heart to the man you hate.  After realizing that Kaori has a feeling towards Ryu, he thought of him as a rival.  Gai tried to  open  this up to Ryu but Ryu just ignored the young lass.   Ryu tried to get out of their situation.  But Gai thought that Ryu was trying to make  him stupid, and so he bit him in a pond.  Gai was still  completely into her though we all know that he was a womanizer.  And,  in able to show his affection, he used to put his life on the line to protect her.  He was able to win her heart.  They were almost at a  thought of marrying each other after defeating the Vyram .  But when Gai met Kaori's parents, that was the time when he realized   that they’re not meant for each other. 

There came a time when Gai finally  learned to accept the warrior inside of him.  However, he encountered Grey.  Grey challenged him to a duel.  He was almost killed.  His head mask exposed half of his face because of Grey's attack. But Gai was able to fire Grey's own weapon to him.  Before Grey died, he asked Gai to light-up his cigarette.