Brass

Brass's powers and abilities

The armored form of Brass is super-humanly durable and strong, but his real trick is that he is capable of generating any type of weaponry he needs. This includes guns, swords, energy weapons, explosives, and more. Because he has total control of his body down to a subatomic level, Brass can reconfigure himself in many different ways, adding new armor, creating wings and propulsion systems for flight, changing modes to better deal with a threat, etc.

He can also make things that aren't weapons like energy shields and microscopic machines. Brass has amazing sensory abilities and automatic systems. The armor is semi-sentient and responsive to the environment, often responding to threats that Hershel doesn't know about and defending him from them before he realizes he's in danger. He can't even kill himself without the armor saving his life. Because of Brass, Hershel can speak any language because the virus interprets everything as code and can translate for him. It even allows him to communicate with machines and effortlessly hack advanced systems just by "talking" to them in their own language.

Weaknesses

The only physical weakness of the Brass armor is that it is vulnerable to EMPs and extremely powerful electrical attacks. Brass seems to have a psychological weakness (or possibly a strength depending on your perspective). When in his armored form Hershel is much more prone to violence and his conscience is muted to where he doesn't feel sadness or remorse for actions that would bother him normally.

For all other hosts of the virus it has been the case that this cold-hardheartedness and willing acceptance of violence eventually reaches the point where the host engages in the wholesale slaughter of all things that are not also infected, but Hershel seems to keep this in check.