Burglar (Trainer class)
From Bulbapedia, the community-driven Pokémon encyclopedia.
A Burglar (Japanese: かじばドロボウ Kajiba Dorobō* どろぼう Burglar*) is a type of Pokémon Trainer that first debuted in the Generation I games. They are generally depicted as suspicious old men sneaking around with a sack thrown over their backs. If defeated, they will sometimes drop an item as they flee.
They specialize in weak Fire-type Pokémon,also they use Koffing,maybe they are used to be a smoke ball for quick escapes
