the jovian race is reserved for CCP and ISD avatars. they use various hulls when in the actual game world.
-the eidelon battle ship was the biggest ever piloted. (looks like a silver sleeker shasha mothership.)
-the polaris frigate is most commonly used by CCP Devs and the events team. as the resistance profile scales with damage taken.
-the cockroach is used by bug testers on the live server. they can pop up place to place but normaly are testing exploits and reported buys on the live server
from a law stand point the closest we have seen to Jove capability are the Concord response drones that were designed in part with the Jovian empire to maintain a consistent law and order in the Space of empire factions