|Organization||Space Operations Duel Squadron|
|School||Goha #5 Elementary|
|Anime debut||Yu-Gi-Oh! SEVENS episode 04242: "Space Operations Duel Squadron"|
Leo is a fair-skinned bespectacled boy with red hair and blue eyes. He commonly wears a spacesuit, often with the visor down, with the emblem of his club on the shoulder.
Leo's name comes from Alexei Leonov, a Russian cosmonaut who was the first human to make a spacewalk.
Team Battle Royal
Leo, Braun and Kamome went to Maximum Mountain to search for their own Maximum Monsters, stringing up lights in the mineshaft at the Abandoned Dorm and meeting Lucidien "Luke" Kallister, Tracker, and the Heavy Cavalry Duel Club, who held jurisdiction over the mine. Braun challenged Asana to a Rush Duel for the right to excavate in the mine, but Asana told him he would be Dueling Luke instead. Leo provided Braun with a lunar ladder to descend before the Duel, and remained on the sidelines as Braun Dueled Luke, observing its progress. Luke eventually defeated Braun, but allowed Leo and his friends to join him in excavating Maximum Mountain as thanks for helping him realize something during his Duel with Braun, though they found no Maximum Monsters.
Leo, Braun and Kamome entered the Goha Rush Duel Team Battle Royal, meeting at Goha Stadium for registration. At the end of the second day of the tournament, Braun Dueled Nail Saionji of Team YugaNail with R and was defeated by "Yggdrago the Sky Emperor". Leo then watched as Trapigeon delivered a message to Yuga. Yuga asked Leo, Braun and Kamome to examine the moon with their Hubbel Space Binoculars, explaining that he believed whoever had set up the Goha Rush Duel Team Battle Royal was trying to divert everyone's attention to Maximum Mountain, and Nail gave Leo, Braun, and Kamome a program to analyze the moon's surface.
The next day, Leo, Braun and Kamome attended the finals, watching Roa and Romin Kassidy's Duel and Nail's with Gavin Sogetsu. During Yuga's Duel with Luke, Leo, Braun, and Kamome finished examining the moon and they presented their findings to Yuga as the power began to go out due to someone hacking the Goha Duel Server. Braun revealed the server was actually carved into the surface of the moon, including the Rush Duel program in the shape of a robot, and his footage revealed that the "hack" was hundreds of Goha Enterprises Drones eroding the robot to "uninstall" Rush Dueling. Yuga and Luke decided to continue their Duel despite knowing it would uninstall Rush Dueling, and Luke eventually defeated Yuga. Braun projected the blank surface after the robot was destroyed, and then presented the new Super Rush Robot that Yuga and Nail had constructed to house the Rush Duel program, which would be stronger than its prior form.
Goha 6 Siblings
Leo, Braun and Kamome were looking at the moon with their Hubbel Space Binoculars one day when they saw the Super Rush Robot moving. Braun quickly called Yuga and alerted him to the robot's actions. The true Goha Presidents, the Goha Siblings, had returned to Earth, evicted the current president, Mimi Imimi, and challenged Yuga and his friends to Rush Duels with the Super Rush Robot held hostage by Forced Gymnastics Armaments that would shake it apart unless Yuga defeated the six siblings. Leo was in Goha City one night with Braun, Kamome, Saburamen, Sushiko, Briscoe and the Duel Dinosaur Club when he watched the Rush Duel between Yuga and The☆Lukeman, including Yuo Goha's rage after he believed Yuga and The☆Lukeman weren't taking the Duel seriously. To Leo's shock a meteor entered the atmosphere and plunged towards Yuga, having been dragged in by the Goha Meteor Shower, and Yuga blocked the meteor with his Duel Disk, acquiring the "Fusion" card contained within it and using it to defeat The☆Lukeman, saving the Super Rush Robot.
Leo, Braun and Kamome went to the Goha Enterprises Main Office on a field trip, where they were met by Yuga, Luke, Romin, Gavin, Swirly and Rayne and Rino, who were now working at Goha Enterprises.
- Yu-Gi-Oh! SEVENS episode 04242: "Space Operations Duel Squadron"
- Yu-Gi-Oh! SEVENS episode 04343: "Opening! Team Battle Royal"
- Yu-Gi-Oh! SEVENS episode 04848: "Clash of Secret Arts!"
- Yu-Gi-Oh! SEVENS episode 05151: "Road vs. Daor"
- Yu-Gi-Oh! SEVENS episode 04949: "RoaRomin"
- Yu-Gi-Oh! SEVENS episode 05050: "Gakuting"
- Yu-Gi-Oh! SEVENS episode 05252: "The Final Rush Duel"
- Yu-Gi-Oh! SEVENS episode 05454: "Riding Rush Duel!"
- Yu-Gi-Oh! SEVENS episode 06767: "Space Warrior The☆Lukeman"
- Yu-Gi-Oh! SEVENS episode 07070: "It's Her, the Hidden Nanahoshi"