Local Legends of Fontaine in Genshin Impact are 8 mini-bosses that grant achievements in the "Wonders of the World" section and treasure chests upon defeating them. The distinctive feature of these bosses is their high HP pool and powerful attacks, while they are not marked on the map.

Let's explore where to find each of the Local Legends of Fontaine and how to defeat them. 

Ocean Circuit Judge

Ocean Circuit Judge is a shielded armored crab located in Elton Trench. It attacks using two methods: a swirling attack and a crab volley. Defeating the Judge with regular attacks is almost impossible, so you need to use the power of the Xenochromatic Armored Crab to defeat it. 

In a separate guide, we've covered how to defeat the Ocean Circuit Judge.

Iron Viscount

Iron Viscount closely resembles the Ocean Circuit Judge in mechanics and appearance, except for color. The principle is the same: absorb crab charges and counter-attack first against the boss and then against the shield. It can be found underwater in Boiling Lake. 

We've provided detailed instructions on how to defeat the Iron Viscount in a separate guide.

Vivianne of the Lake

Vivviane of the Lake is a mini-boss located in the northern part of the Court of Fontaine. It resembles a Tainted Water-Spouting Phantasm, but more powerful. It uses two attacks: cannons and a laser. The only way to defeat the boss is to deal strong blows and avoid its attacks, which are strong enough to kill in one hit.

In a separate guide, we've explained how to defeat Lady of the Lake Vivienne.

Ninianne of the Lake

Ninianne of the Lake is the counterpart of Lady of the Lake Vivienne and is located in the northern part of the Beryl Region. It appears as a Tainted Water-Splitting Phantasm and shares the same mechanics as Vivienne, but it uses close-range attacks. 

In a separate guide, we've covered how to defeat Lady of the Lake Ninianne.

Fading Veteran

Fading Veteran is a chubby boss that resides underwater in Elton Trench, right below the teleporter. It goes into invisibility mode when it performs sound wave attacks. It can be easily defeated using the power of the Xenochromic Plump. 

Swords of the Gorge

Swords of the Gorge are a pair of bosses named Cortan and Morles. They are located in Thalatta Submarine Canyon. The bosses cannot be defeated with regular attacks. You need to wait for the rays to perform a joint attack, forming a link that needs to be destroyed. This will deal damage to both bosses.

Dobharcu Lord of the Hidden

Dobharcu Lord of the Hidden is a boss identical to the Fading Veteran. It also goes into invisibility mode and uses sound wave attacks.

Fairy Knight Twins

Fairy Knight Twins are another pair of rays, located in the dungeon area of Pale Forgotten Glory. Use the Xenochrome Sharpshooter ability to destroy the periodically appearing link.