Maron Leltoy (original version Maron Rich (マロン・リッチ Maron Ritchi)) is Baron Leltoy's younger sister.
She lives with her family on Vestal and is the second oldest of the Leltoy siblings. Despite being the second child, she seems to have a large age gap with Baron. Maron is still a child at heart, shown as despite all of the danger, she came to visit her brother without second thought. She was really happy about going to the park alongside her brother, and becomes worried when Baron left home. Maron was Baron's pride and encouragement as she seems to be one of the very few that truly admire him.
When she was saved by Shun, she was shown to blush and became really touched, as she quickly idolizes Shun as much as she idolizes Baron, and seems to see him as her hero.
She makes her first appearance in Revenge of the Vexos with Baron's other siblings and appears to show some worry to Baron before he left to meet with Ace after he lost to Prince Hydron. She appeared again when Baron and the rest of the Resistance had to leave for Earth.
In Samurai Showdown, Maron uses the Dimension Transporter to visit Baron on Earth. When she arrives, Baron takes her to an amusement park where she showed a lot of excitement. While Baron was showing her how to use a Gauntlet, they accidentally ended up in a battle against Volt, who was battling Shun. After joining the battle, Maron watches from a safe distance until some of the attacks landed near her. When she was falling from her lookout post Shun saved her. Before Maron going to her home, she gave Shun a kiss on the cheek for saving her.