These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Complete Monster: Lieutenant Bella and Cavik Toth. They drop bioweapons on a town filled with civillians, and even when the test is successful Bella still tries to level the city purely because she enjoys, failing only because Reti and Adi intervene. She also violently threatens her subordinates. Toth, meanwhile, kills his aids with the THX weapon simply because production is behind schedule, and develops weapons to use against the clones, testing them against innocents. Nym's aid describes him as a ruthless monster.
Mother Fucking Geonosian Starfighters!! They get downright unfair in Mission 11, when they spam rather strong missiles and spawn on both sides of the Republic cruiser, making them very hard to intercept. And unlike "hex" units, they're just as dangerous to you as they are your escort mission charge.
Game Breaker: The X-Wing can turn into this, same with the Advanced Havoc. The Republic Gunship also qualifies, what with it's incredibly powerful Hit Scan beam cannons, and turrets that shoot other targets.