Introduced in Gen IV alongside Leafeon, Glaceon is the ice-type evolution of Eevee and can be acquired by leveling your Eevee up near an Ice Rock (found in the cave on Mt. Lanakila in Sun & Moon). The coolest feature of Glaceon is its little hat-like…thing that has two long tentacle-like dangles, often confused for an extra pair of ears. Also, according to the Pokédex, it can even completely freeze its fur into sharp needles that can be fired (though no such ice move currently exists, so you might have to use your imagination on that one).
As an ice type, Glaceon is pretty fragile so you’ll have to be mindful of move types such as fighting, rock, steel, and of course fire. You’ll also have to deal with only being resistant to other ice-types, so it can be a little tough to manage like all other pure ice-type Pokémon. If you can get past all that, Glaceon can make a nice addition to your team!
Introduced in Gen II, the mysterious Espeon can be evolved from Eevee when leveled up with high friendship during the day, so be sure to treat your Eevee nicely if you’re aiming for its psychic-type variation! Though you should be treating your Eevee and all your Pokémon with love regardless. Espeon is characterized by its lilac-colored fur, split tail, and a red gem on its forehead.
Outside of Alakazam, Hypno, select Legendary Pokémon and a few others, there really aren’t many options for pure Psychic-type Pokémon so Espeon is a perfect choice, having only to worry about bug, ghost, and dark-type moves. That being said, you can’t necessarily go wrong with an Espeon on your team, so if you feel like a psychic-type is what you really need, look no further!