Every good military group needs an angry, hot-headed, loud-mouthed, rampaging bad boy whose sole purpose is to blow random stuff up in the most messy ways possible. Brionac is no different, having the customized Vulcan Rifle/Missile Launcher artillery-wielding Jeremy amongst their ranks.
As expected, Jeremy is not the most subtle duelist of the bunch. With his Inertia Canceller ability letting him ignore his huge weapon's recoil with impunity, Jeremy could simply jump into battle with guns a blazing and missiles a flying until his opponent is reduced to bloody chunks before they could so much as bat an eyelash. Bloody, brutal, and with plenty of property damage. Just the way he likes it.