The Hydreigon might be based off the Hydra, but in its appearance it resembles a flying dragon and hence it bears the name Hydreigon- a combination of Hydra and Dragon. Looking at this picture of the Pokemon anyone would say that it is brutal, which it most certainly is. In addition, this one s a tough battler too. This means that it can fight out most of your opponents. Of course, the Hydreigon is not capable enough to make a clean sweep, but it is fierce and aggressive enough to leave any team hurting badly before the creature itself is taken out of the game.