38highest level
Fought at Ecruteak City.
This is around Beat Whitney — Goldenrod City Gym, badge 3 in the story — that page lists everything you can have caught by this point.
Types on this team: Psychic
| Pokémon | Moves | |
|---|---|---|
 | Espeon Lv 38 · Synchronize | Last Resort Psychic Psych Up Swift |