EPSILON V3 is an AI, although at times, she really doesn't seem that way. Although she is virtual, whether she is sentient or not is unclear, even to herself. But, when her best friend, Sora Watt, engages in combat against the forces of tyranny, she sits back and helps. Sometimes, she sends him helpful supplies, other times, she is trying to communicate with the enemy. She loves breaking the forth wall, so prepare to see a lot of that, too.