Arrghus

Arrghus is a recurring Boss in. It is typically seen as a large, one-eyed jellyfish that is usually surrounded by miniature polyps called Arrgi.

A Link to the Past
In, Arrghus is the boss of the Swamp Palace, where it is the guardian of the second Crystal. Arrghus appears densely surrounded by multiple Arrgi. These Arrgi and the creature's ability to float make it invulnerable to normal attacks. Its method of attack is to send the Arrgi swirling outwards. The Arrgi must be pulled away using the Hookshot and then defeat with the Sword. When all of the Arrgi are gone, Arrghus launches itself into the air and attempts to crash straight down upon Link, then speeds across the shallow water of the room. It will also shoot needle thin lasers at the ground, which will create huge explosions, throwing columns of water into the air. In this state, it is unprotected and can be attacked with Link's Sword or other weapons. After each hit, it attempts to crush Link from above again, or shoots more lasers at him. After its destruction, it leaves behind a Heart Container and Link is presented with the second Crystal in which one of the Seven Maidens is imprisoned.

In, an orange Arrghus is the guardian of the green Four Sword shard in the Palace of the Four Sword. Instead of Arggi, Arrghus is surrounded Bari, which will sometimes shock Link when he pulls them away from their host. This Arrghus is also stronger, faster, and hardier, and once the Bari are removed, it is able to both change direction while skating around. as well as summon swarms of Kyameron.

Four Swords Adventures
In, Stone Arrghus appears as the boss of the Eastern Temple stage. It is similar to its other variants, except that it greatly resembles a stone and is covered by smaller rocks. The Links must use the Boomerang to pull the rocks off of it and then hack them with the Sword. Once all of the small rocks have been destroyed, Stone Arrghus starts attacking the Links. When defeated, it disintegrates and releases the Yellow Maiden.

A Link Between Worlds
In, Arrghus is again the boss of the Swamp Palace, where it protects the Painting of the Sage Oren. Arrghus is fought much the same way as in A Link to the Past, as Link must pull off the Arrghi from its body using the Hookshot and defeat them one-by-one. As before, Arrghus will also occasionally send the Arrghi diving down towards Link in attack. After defeating all the Arrghi, Arrghus's eye will open and it will attempt to crash down onto Link, as well as attempt to shoot streams of laser beams that boil the water beneath Link. It can be attacked by any weapon when it lands. After it is defeated, it will leave behind a Heart Container as well as the portrait holding Oren.

A Link to the Past Comic
A creature resembling Arrghus is featured in Chapter 9 of the A Link to the Past comic. Fought in the Swamp Palace similarly to the game, the monster is shown as a bright red jellyfish that attacks with tentacles, but no eyeballs are shown. In the comic, as Link makes his way to the imprisoned Maiden, a large, tentacled monster attacks him. He thrusts the Master Sword into the monster and defeats the creature, which spits out Link from inside and gives him a chance to destroy the floating Crystal where the Maiden is imprisoned.

Etymology
It is likely that the name "Arrghus" is a reference to, an all-seeing hundred-eyed giant from Greek mythology.

The Majora's Mask mini-boss Wart shares Arrghus's Japanese name,.