By skyforbes 
Ajin – Anti-Demi Special Forces
The elite soldiers of Japan, tasked to hunt down and subdue the immortal, Stand-possessing super beings known as demihumans. They show up in the last fifth of the story and absolutely wreck everyone and everything, starting with a headshot to the (also immortal) protagonist of the story, just to make their entrance more badass. They are absolutely brutal and efficient. I love them.
D&D – Neverwinter Castle Guards
Surprisingly observant and competent guards, hounding down the shape shifting druid Doric all across the castle walls and beyond. Even after she transforms into a bird and flies away (a moment where most movies would cut away), these badasses immediately try to shoot her with arrows and actually succeed in bringing her down for a prolonged chase scene.
Fullmetal Alchemist – Fort Briggs Soldiers
The most top-notch soldiers of the north, trained by the amazing Major General Armstrong. They, quite easily, take over the capital of their country in an effort to stop a transmutation that could destroy the entire nation. Unlike the more likeable protagonists, however, they don't shy away from killing the enemy soldiers of Central Command, dispatching them with brutal efficiency. They are also relevant and indispensable right until the final fight against a supernatural god-like enemy!