Gravity Thrones

Gravity Thrones are floating chairs used by the Covenant leaders, the Prophets. The Prophets are always seen sitting atop one of these devices. It is unknown wether the Prophets are physically unable to support themselves without the Thrones, or if they are simply a matter of convenience. The Thrones are equipped with a single energy cannon on the underside of the chair, as evidenced by the Master Chief's battle with the Prophet of Regret at the end of Regretin Halo 2. They also seem to be equipped with a teleportation feature, unless the teleportation is a product of the Prophets' own abilities.