Ryoga Echizen(越前 ????Echizen Ryōga) is a fictional character and the antagonist turned protagonist in the Prince of Tennis movie, Tennis no Ōjisama - Futari no Samurai. Ryoga is the son of former professional tennis player Nanjiro Echizen (once known professionally as Samurai Nanjiro), but since he was introduced to his brother, Ryoma Echizen, when he a child, many people suspect Ryoga to be Nanjiro's adoptive son. Some controversies are the fact that he holds a stunningly shocking resemblance to Ryoma with his hazel eyes and black-green hair. His first and only appearance is in the movie that he was featured in.