Who's that Pokemon?

[The-Hydra]

Here's an old fun game from Pokestadium! I've straightened out a few of the wrinkles, But it's basically the same:

1. Person A (Andy) thinks of a pokemon, Then gives a hint about what it is. For example, If they thought Venonat, They could say, "This pokemon has red eyes".
2. Person B (Bob) takes a guess at what pokemon it is. If they fail, 'Ol Person A will post another hint as soon as he sees his guess. There may be multiple guesses before Person A sees, But that's fine.
3. If Person B or someone else got it right, Person A says so, And then Person B is the winner, And thinks of a new Pokémon and gives a hint. Then this repeats.
4. If the person who won does not post within 24 hours, The first person to claim the position is the new person who thinks of a pokemon.

I'll start!

This Pokémon is found only in caves.