One mysterious doctor, Tobias Right, gave special parts for his own son, Tokuro Xavier(Incarnation of X), with cybernetic enhance limbs tougher than any metal or weapon no matter how hard they push, granting him a powerful arm cannon to fire energy projectiles, an ability to perform a dash boost in acceleration, land properly from any state he's in, and two of his unique abilities; the ability to copy weapons and abilities from opponents or allies no matter the status, and his limitless potential of power and hope for life itself to protect innocent lives as much as he can to be strong no matter if he wins or lose as it makes him stronger as improvement to his body. Now awakened in a world where Faunus, humans, Grimm, and a new species, Reploid, exist in the modern era, Xavier embarks on a journey to discover his purpose and build a bond with both humans and faunus as his main goal was to bring peace to humans and faunus no matter the cost of his own life.
Welcome to an Alternate Universe of RWBY with new twists and turns.
During Jaune's early life, he was abused and beaten by his father after the death of his uncle as the devil's drink controls his father. Jonathon Arc, the father of Jaune has lost his brother, Hendrick Arc for unknown reasons, but with the wounds, he knows he's been murdered. Jonathon was once a great father to his wife and kids until the drink got the better of him which has turned him into an abusive and neglecting father. His wife then left after the attempt of rape had led him to be arrested and demoted. The Arc sisters soon left leaving Jaune all alone with his father. Jonathon, blaming Jaune for the family leave, forced him into exile and was sent to Mount Glenn along with all the other exiles where he found a mysterious source. That is where the One Man Army was born.
Two years later he conducts acts of anti-terrorism, robbers, raids of bandit camps, etc. Until then, a new enemy known as the [REDACTED] stepped in next door and started invading Menagerie. This is where it all began.