Espeon is a natural-born leader and the founder of an incredibly well-respected rescue team. However, after a mission goes horribly wrong, he disappears without a trace.

Espeon is normally an even-tempered, if slightly stiff and impersonal, team leader. He has a cautious streak, especially with his younger brother Umbreon, but still does his best to be warm and approachable to his friends and teammates. He is authoritative and stern when necessary. He speaks formally and does not mince words, which can sometimes make others feel uneasy. He's in his element when planning and strategizing, but not as much in normal social situations. Despite this, he always has the best interests of the creatures he protects at heart, and would give anything to protect his rescue team.