Bublux

ブブルクス

He appears in the 6th or 7th episode. As one of the Empire's enemy captains, he enjoys snacking on mutton while on patrol. Octavia serves under his command.
Bublux is an inept, overweight, and cowardly man. He believes that only exploitation and political trickery lead to promotion in the empire's forces, rather than honorable deeds and actual skill.
Tasked with merely scouting the area near Avalon castle, Bublux instead decides to launch a full invasion, ignoring Octavia's advice. He believes the Gael tribe to be a weak, undisciplined mob of savages that could be beaten easily. When his scout force is predictably overwhelmed by Gael warriors, he panics and runs away. While retreating across a narrow bridge, Bublux cuts the ropes in a panic, causing several of his own men to fall to their deaths. Octavia narrowly survives the bridge collapse.
Upon returning to their base, Octavia reports Bublux's ineptitude and his actions against his own men to the top brass. This enrages Bublux, as he is furious that she would dare question a superior's methods and make him look bad by reporting his misdeeds. To make Octavia pay for humiliating him, he challenges her to a "one on one" fight in Londinium's arena. Although he completely rigs the fight against her, Octavia is easily able to beat Bublux for good (with some timely help from Morgan).