From Bulbapedia, the community-driven Pokémon encyclopedia.

Charmander is a species of Pokémon. It may also refer to specific Pokémon of that species:

• A Pokémon which belonged to Ash Ketchum before evolving: Ash's Charmander
• A Pokémon which belonged to Ritchie before evolving: Zippo
• A character in Pokémon PiPiPi Adventure: Charmander (PiPiPi)
• A Pokémon belonging to Kai Midorikawa: Charmander (Pocket Monsters)