He doesn't have a physical manifestation, but can run programs anywhere near to a party member. The programs include:
Squads:
There are five of them in a single squad, and each has a laser. They can shoot grenades, airstrike markers, or rockets for as many squaddies there are. They start to fade as they get more damaged and eventually disappear in a polygonal explosion.
Engineers:
These utility programs can hover and pick up souls that aren't attached to a body, and place them in an incubator to reform the soul into a Darwinian, or reform the owner's body. They also are used to carry the squaddie's bombs for the airstrike. They can also reprogram computers.
Armor:
This armored transport can hover over land and water, and can morph into a battle cannon (The turret on the right on the picture)
Which can use bullets, rockets, and flamethrowers.
Darwinians:
These are virtual people that cannot be run. They have free will, and are rather dim. They can receive basic orders, but complicated orders they will not follow. They can run the battle cannon.