Oh! That would be a Litwick. They're a Ghost/Fire type Pokémon; my friend Shiro has one of their evolved form. As for the devices, Pokéballs are sort of... pocket dimesions- pun unintended- used for carrying Pokémon around. Your starter Pokémon is given to you [by the lady who shall NOT be mentioned], but most often you catch Pokémon by throwing the balls at them and locking their signatures.