Billion

Galactic Swordsman Billion is a left-handed warrior serving as one of Galactic Imperial Army Zone's three Galactic Commanders. He is a major antagonist in Chikyuu Sentai Fiveman and the rival of FiveRed.

History
Billion summoned in his old partner Torarugin to have him use the Fiveman's protectiveness of their students to Zone's advantage. He had Torarugin take over the body of Takeshi, a boy who was a part of Gaku's classes, and has him attack FiveRed. However, Torarugin soon decides to just take over the body of FiveRed instead and use it to defeat the other Fiveman. Billion then attacks FiveRed, even though his partner was inhabiting the body, stating he and Zone will do anything to accomplish their goals and fracturing their partnership. Torarugin was later forced from Gaku and destroyed.

In another instance, Billion began dating a girl named Mirian Solar from one of the planets Zone had ravaged so he could manipulate her into using a monster form of hers to destroy the Fiveman. After Mirian uses the red pill to permanently become her monster form, Dark Solar, Billion reveals that he was the one who killed her parents when Zone ravaged her planet. This enrages Mirian into attacking Billion, but she doesn't kill him, as she still loved him. Billion then kills her, knowing that the Red Pill would keep her permanently in her monster state.

Billion once managed to assume a more powerful giant form called "Saber Billion" using the Galactic Demon Sword Saberugin, but he was defeated by Five Robo and brought down to normal.

After the revelation that Galactic Empress Meadow was an illusion created by Vulgyre, Billion attempted to kill Gaku, but was stopped by Gunther, who died as a result. Billion then fought FiveRed one-on-one, and was killed by FiveRed's sword thrust attack using his FiveTector armor.