operate a ninja robot; she pilots the Phoenix Thunderhawk. She is almost as daring as Joe in combat and comes to his rescue several times. A local boy, Kenji, has a crush on her, but she does not reciprocate, and gets irritated whenever Joe teases her about him. She is passionately in love with Joe and is very jealous and possessive, becoming upset and hurt by Joe's continued insensitivity to her feelings and occasional flirting with Princess Romina. She reacts violently whenever she observes signs of Princess Romina's increasing love for Joe. The two girls reach a truce when Romina admits loving Joe, but requests her for a united front until Ladorio is freed. Although Jenny does not like going to Ladorio (fearing she may lose Joe to Romina), she changes her mind when Joe confesses his love for her. Jenny is also close to Mike, giving him advice on courting Jade. , Mike is a 15-year-old boy who treats Joe like an older brother, although he is the opposite in personality, being sensitive, perceptive, and reserved. He is protective of Joe, leaping to his defense when Icelander or Gameran criticizes or are skeptical of Joe. He completes the initial trio who pilot the Ninja Robots; he pilots Burst Dragon. He eventually falls in love with Jade and gets contrasting love advice from both Joe and Jenny. He is critical of Joe's treatment of Jenny, sometimes even physically fighting. , Damian is the 18-year-old son of the Martian north pole's guerrilla leader. He initially mistrusts Joe and the Ladorians, but later joins them when Hazzard attacks both Xenos 5 and the North Pole. After Joe pilots Cybertron, Damian works hard and succeeds in piloting the Black Lion. His microchip on the ninjas provides them with information on the mechanism of Cybertron strengthening the ninja robots. He falls in love with a female ninja (led by Charme and sent to trap Xenos 5), but she sacrifices her life to enable them escape. , Ronin is a childhood friend of Joe , Mike, and Jenny, and is a Major General in Earth. He was very close to Joe when he lived in Mars with his father. He trusts his childhood friends despite the convincing lies told by Hazzard and unwaveringly tries to help them and Xenos 5 by using his father's power and connections, often at great risks to himself. He is