The entrance to the Hydra cave is underwater in the maze in Poseidon's realm. Swim across the top, down the right side, and then left across the bottom. The "gnarly monster" is the five-headed Hydra....
first doge its moves (because its attack burns the floor and if you step were its burning it will hurt you) after that you have to spray the pipes blocking the holes were you throw the explovsives...
No, a Pokemon cannot defeat a Yu-Gi-Oh! monster. The Yu-Gi-Oh! monsters are drawn intricately and more advanced than the Pokemon monsters. Although the Pokemon virtual games are more enjoyable (due...