Hydrex

Hydrex is the third Boss Monster that the player and their Vulpin must defeat in order to progress through the world of Vulpin Adventure. It is the only Water-Type boss monster, and it drops the Tome for the Bubble Fountain ability upon defeat, while its corrupted form drops the tome for Aqua Breath. Its regular form has 200 Health Points, and its corrupted has 500.

Appearance
Hydrex is a translucent, ice-blue creature that appears vaguely avian in shape, with an underbelly coloured white-blue. This white-blue fades in a speckle pattern into the primary colour. It stands (?) upon a single leg (?) that has a base of a spiky material, supposedly ice. It has two arms that end in large, spread pawlike appendages that are each adorned with four straight, white talons. There are spikes running down the centre of its head and a large set of spikes down the middle of its back. Its face is smooth up top, but the underside is sharp and angular, resembling a toothed upper beak of some kind. There are icicles hanging from it, and this face has no visible eyes.

In its corrupted form, it is more of a sickly, greenish-teal colour as opposed to its normal blue-and-white colour.

Abilities
Hydrex, in both its normal and corrupted form, is only known to use the Frost Strike and Bubble Fountain abilities. When it attacks, it either swings its arms downwards at the defending Vulpin to strike them, or it raises its arms to summon frost or bubbles.

Habitat
Hydrex is found guarding the end of the Sea Cave area, and is supposedly the reason for all of the water deep inside the cave being frozen into ice. Its corrupted form can be found while the player and their Vulpin explore Darklight Castle, and does not display the same environmental effect, though that is likely just because there are no sources of water for it to affect within the castle.