Trowa was once a circus performer. He was saved by Heavyarms when he was about to be forced to perform a suicide show, and they have been traveling together ever since. Armed with the skills he honed at the circus, he embarked on an endless journey in search of his parents, but when the Genesis Army OZ World invaded, he joined Heavyarms as part of the resistance.
Trowa heads to the land of Argus to repair his Roaring Machine Soldier and increase his own fighting spirit. He is confident that at the end of this new journey he will obtain the immense fighting spirit of the Fighter Double Zeta.
Trowa obtained the Axe of Lion in the Kingdom of Argus. Infused with the fighting spirit of the Fighter Double Zeta, he heads for the Lacroa Kingdom, where the fierce battle with OZ World continues.
Trowa's growing fighting spirit and his bond with Guardian God Heavyarms brought about the evolution of the Lion's Axe, awakening the latent power of the Fighter Double Zeta within Trowa. Trowa as a member of the New Argus Knights.