Espeon

Espeon is unable to carve out any sort of niche in the metagame because it's completely outclassed by all the other Psychic-types in the tier. Offensively, Alakazam, Reuniclus, and Latios all outshine Espeon with their better Speed, bulk, power, movepools, ability to set up, and flexibility in set choice that also lets them fit on more team archetypes. Defensively, Espeon is lacking in any defensive profile compared to Reuniclus, Latios, and Xatu. Xatu in particular outclasses Espeon as a Magic Bounce user because of its aforementioned better bulk alongside its immunity to Spikes, more reliable recovery in Roost, access to U-turn to pivot in teammates safely, and ability to actually take on Tyranitar with Reflect + Rocky Helmet. As a lead dual screens setter on hyper offense, Espeon is outdone by Azelf and Mew due to their access to Explosion, letting them get teammates on the field safely while still being able to keep entry hazards off the field with Taunt.