Django

Poncho is a character of the day who appeared in The Underground Round-Up.

Poncho is a Diglett rancher, meaning he uses Diglett to round up different Pokémon. When Ash and his friends met him, he was trying to round up multiple Voltorb and Electrode who had been scaring people away from a small town. Poncho would use his Diglett to dig tunnels underneath the Pokémon that lead to another island, where the Voltorb and Electrode could live in peace without people.

Unfortunately for Poncho, the mayor felt that he was taking too long in removing the Electrode, so she hired Team Rocket to get rid of them instead. Team Rocket's solution was to force the Electrode to use Self-Destruct and Explosion, and then taking them all for themselves.

Angered, Poncho sent out his Dugtrio, which helped get rid of Team Rocket, and, along with all his Diglett, move the remaining Electrode to the island. With that, Poncho had successfully moved all the Electrode away from the town, and it was allowed to reopen once again. As a result, the mayor rehired (and promoted) him and gave the Diglett rancher the key to the city.

(Source: Bulbapedia)