Psychicer (Japanese), Psychic (English), Seer (English - TCG translation)
A trainer class in Pokémon media which specializes in using Psychic-type Pokémon.
Psychics are often seen levitating their Poké Balls with the power of their minds. They sometimes mention predicting the future or otherwise using psychic powers.
In some games, all Psychics are male (including RGBY, GSC, XY, and LGPE). In some other games, male and female Psychics are seen.
In XY and ORAS, there is also the "Brains & Brawn" trainer class, which is a duo formed by a Psychic and a Black Belt.
See psychic_(pokemon_move) for the move that is also named "Psychic".