JENNY AI - (Renny Ai) - Renī Ai (レニー・アイ)Voiced by: Noriko Hidaka
Age 17. Jenny ("Renny" in the Japanese version) is portrayed as a tomboy, but is actually a very sweet girl. However, like any girl, she also gets jealous. and is possessive about Joe. She is a good fighter and almost as daring as Joe, although she is extremely concerned about her family who stayed behind on Mars. She is the second to operate a ninja robot, the Phoenix Thunderhawk (Houraioh).
She acts as a sister to Mike and helps him get the girl of his dreams - Jade. Local boy Kenji has a crush on Jenny, which she doesn't reciprocate. She gets irritated when Joe teases her about him. When the princess hugs or flirts with Joe, Jenny becomes upset and hurt. She believes Romina has feelings towards Joe, which is proved to be true later on. She asks Joe how he feels about her many times and even says that she loves him and just wants to be with him, even if he went to Ladorio. She is hopelessly in love with Joe, which later on he reciprocates her feelings for him.