My favorite Pokemon is Snorlax. This incredibly lazy and gluttonous Pokémon may be the strongest non-legendary in the anime. Though not as well-known as Charizard, it definitely packs a powerful punch.

Ash himself states "None of our Pokémon are any good against Snorlax", and he eventually captures the creature only once it falls asleep.

Snorlax can do more than just withstand and dish out blows. He learns the incredibly powerful Hyper Beam move, and - get this - is noted to have remarkable agility. Yea, Snorlax can move amazingly fast despite his girth (similar to real-life bears), and is an excellent swimmer.

In addition, Snorlax has never once lost a true one-on-one battle; the only times it has ever been defeated are after it has to fight multiple Pokémon in a row, where it always takes out at least one (and usually more) before falling.