Cyndaquil, the Fire Mouse Pokémon. Normally mild and even tempered, Cyndaquil will shoot a scorching flame out of its back when upset.
– Ash’s Pokedex
Cyndaquil is my fave 2nd gen starter. Its flame on its back can be turned on or off. Its eyes are always closed, makes me wonder how it can see.
In the anime, Ash had a Cyndaquil, it had trouble using Fire type attacks at first, and Ash had to do some rigorous training with it to get its flames out. It actually evolved into a Quilava. Dawn also had a Cyndaquil, which she got as an egg from Lyra (the HGSS female player, who showed up one episode). It was used as part of her contest team, being paired up with her Mamoswine to do moves like the Flame Ice combo. It evolved into a Quilava during the DP special (after the end of the series). Even though both Ash and Dawn had Cyndaquils, neither evolved into Typhlosion.
Stat-wise, it has good Speed and Sp Attack. In the Dreamworld, it gets Flash Fire, which is a better ability than Blaze I think.