The Ghost Suit was designed for stealth, primarily via cloaking device. It also enables the Ghost to become intangible. He is also able to make other objects invisible and intangible. After his early battles with Iron Man, he upgraded his suit to mask sounds, including his heartbeat. His suit can also be set to disrupt or override electronic devices via touch. In addition to his suit, Ghost uses portable intangibility circuits.
The suit's primary function is to allow it's user to move-about undetected. The suit contains an oxygen supply that allows the user to remain active while becoming intangible, and an energy field that can disrupt technology and affect the heart via it's electric pulse. In addition, the suit is equipped with explosives, which are strong enough to destroy the foundations of a building.
|On Earth-1610; Ghost is an unidentified man who is an agent of Howard Stark, Sr.; Tony Stark's supposedly dead grandfather. Howard had Ghost steal secret information belonging to Tony, a cube that supposedly contained great secrets to behind Tony's technology. When they opened it, it was discovered to be the remains of a dead Tony Stark of another universe, Earth-242. This particular dead Stark possessed a very unique self-defense system within its alien tech that disables machinery nearby. Apparently Ghost was another human that depended on Iron Man-tech to stay alive, and Ghost along with Howard and Justine Hammer died moments after understanding its nature.||Ultimate Armor Wars #4|
|On Earth-199999, Ghost is Ava Starr, the daughter of quantum specialist Elihas Starr who after an childhood accident with experimental equipment that killed her parents, became quantum instable and thus able to render herself intangible and generate extreme amounts of power. S.H.I.E.L.D. trained her from a young age to become a spy and assassin, and designed a containment suit that could help Ava control her phasing for both stealth and offensive purposes.||Ant-Man and the Wasp (film)|