Being a member of the B Class #1 (formely A Class) unit, Inukai is a very skilled fighter. He has reached Master Class with Asteroid, and needs less than 1.000 points to achieve it with Hound, too. He has a good degree of mobility, often running on walls to reach his target, as well as good reactions, which allowed him to summon a Shield quickly enough to intercept the bullet of an Ibis and dodge Okudera and Koarai's surprise attack, although he still lost an arm. On the latter occasion, he displayed the ability to quickly adapt to sudden changes in combat. Thanks to his fighting experience, he was able to see through Mikumo's multi-layered trap and counter appropriately. Inukai also has a high degree of dexterity, catching his weapon in the air after losing it directly by the handle.
Inukai fires Asteroid through a firearm of the assault rifle type resembling a personal defense weapon, which is smaller and seemingly wielder, allowing him to aim more accurately. He appears to be very skilled and experienced with it, being able to shoot while in move and even while holding it with a single hand.
Inukai is highly skilled in using Shield, actively altering its shape in a fluid manner to adapt to battlefield changes. As a Gunner, he puts it around his weapon to shoot while protecting himself. He can instantly create a focused version to stop a Sniper's bullet, or to block a Raygust in Shield Mode in close quarters combat.