Andy's Emboar

Andy's Emboar is Andy's first captured Pokémon.

Unova Arc
A year prior to Andy and his friends becoming Pokemon Trainers, as a Tepig it was suppose to be given to new trainers by Professor Cedric Juniper along with Snivy (Tristan's) and Oshawot (Andy's). But N broke into his lab and set all the three starters free, Tepig was frightened and didn't know what to do so it ran as far as it could with Snivy. Eventually it was found by Andy, who realized it was a stray Pokemon that didn't have a home so Andy decided to capture it and raise it for the day he became a Pokemon Trainer.

Trivia

 * Despite Emboar actually being Andy's first Pokemon, Andy usually says that Oshawott is his first Pokemon.