Heroic Fighter (雄闘 Yūtō?) is the fourth highest rank of the Four Armies of the Neros Empire. The four armies' Heroic Fighters are:
- Armored Army: Heroic Fighter Wogger, Heroic Fighter Barloc, & Armlee (formerly; stripped of rank)
- Robotic Warrior Army: Heroic Fighter Jars
- Monster Army: Heroic Fighter Gamadone
- Armament Army: Heroic Fighter Barbery