Quilava is the evolved form of Cyndaquil. It has more of a burning passion for battle than it's previous evolution. It will also intimidate its foes with its flames. I would imagine Quilava having a young energetic teenage voice. I may have listed young adult for this, but I would recommend more of a teenage voice coming from this Pokémon.

Typhlosion is Cyndaquil's final evolution. Once its rage intensifies, anything that touches this Pokémon gets burned to a crisp. It also hides a secret move that can cause gigantic explosions. With this Pokémon's voice, it would have more of an adult voice and I would consider it having the type of voice that makes it sound ill-tempered and always prepared for a battle. This role will also contain quite a lot of yelling.