Jack Frost.
Arthur and the group reached an empty cavern near the mountain top. There were only a few hundred meters before they reached the front steps of the ice castle.
The weather, luckily, stayed good during their journey. But now, they were far above the ground, and breathing was getting harder. Also, the air was immensely cold that could freeze an ordinary person within seconds.
''What should we do when we arrive at the castle?'' Xerxus asked while rubbing his legs, trying to keep them warm.
''We most likely have to fight,'' Amour said while trembling in the cold.
''Arthur, I think you should stay behind.'' Xerxus said while voicing his concerns, ''Your level is below us by a great amount.''
''I know that I am not as strong as you four, but I am not useless.'' Arthur said while looking at his hands that were bulging with veins, 'Inside my veins, immense power is flowing…'
''Fine, but be careful.'' Xerxus sighed after not being able to change his mind.