Leo Imagin

Leo Imagin (レオイマジン): The Leo Imagin is Kai's subordinate and uses his three Leo Soldiers (レオソルジャー) to kill Momotaros, Urataros, and Kintaros in the Time Station while he handles the task of killing R-Ryotaro Nogami upon fulfilling his part in Kai's plan. But Yuto Sakurai drives the Imagin away with his attack and Momotaros, Urataros, and Kintaros use their versions of Den-O's finishers to destroy his Leo Soldiers. When Den-O Sword Form appears, the Leo Imagin travels back in time through Kai with Den-O in pursuit. But before the fight could start, Momotaros loses his sync with Den-O, leaving Ryotaro to assume Liner Form and fight the Leo Imagin, using the DenKamen Sword's RyuGun Mode to destroy him.

Leo Soldier Yummy
Leo Soldier Yummy (レオソルジャーヤミー): Cell Medal recreations of the Leo Soldiers appear as part of a Combatman Yummy (戦闘員ヤミー) army, the product of Shocker Combatman In Sendo's desire for like-minded allies to defeat the Kamen Riders, based on the grunts from past villainous groups who fought against Kamen Riders, whom Sendo refers to as the "past generation combatmen" (歴代戦闘員). They fight Kamen Rider OOO but are eventually all destroyed by Kamen Rider OOO Tajadol Combo's Magna Blaze Giga Scan.