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For those who have not completed games in the Xenoblade Chronicles series, this page contains spoilers regarding the plot. Discretion is advised.

Ouroboros (Japanese: ウロボロス, Uroborosu) are forms created from the Fusion of two characters in Xenoblade Chronicles 3.[1]


Ouroboros are larger forms taken by various pairs of characters, who combine through Interlink when certain conditions are met. Each Ouroboros has its own powerful moveset, and deciding when to transform can be the key to winning a battle.

Noah and Mio, Eunie and Taion, and Lanz and Sena are all capable of this transformation. All three pairs can assume two different forms, depending on which character is in control.[2]


Ouroboros – Xenoblade Chronicles 3



Noah, Lanz and Eunie confront Mio, Taion and Sena on a battlefield, the two groups being selected for a special mission for Keves and Agnus. They meet during the course of those missions and clash on the battlefield until they are suddenly attacked by a Mysterious Giant, who is in fact Consul D. While Noah is trying to save Mio who is about to be attacked by the Giant, Guernica Vandham appears and activates an Interlink that make their bodies fuse and transform into an Ouroboros. They manage to survive the attack of the Mysterious Giant, however this leads to the six characters becoming the target of Keves and Agnus, now that they are fugitives and have the ability to transform into Ouroboros, considered by both nations as particularly dangerous beings.

The Lost Numbers and the people of the City are descendants of the first Ouroboros, whose statues can be found there.

List of Ouroboros


Soul Tree

Main article: Soul Tree

Ouroboros can be further upgraded by spending Soul Points in the Soul Tree to unlock new traits and abilities, and they can also participate in chain attacks.

Battle Arts

Main article: Battle Arts (XC3)

Ouroboros have their own Arts.

Using Fusion Arts in combat raises the Interlink level, which strengthens the Ouroboros. It is important to consider whether to use the Ouroboros right away or wait until the level is higher.[3]

Heat Gauge

Main article: Heat Gauge

Using Fusion Arts in combat raises the Interlink level, which strengthens the Ouroboros. Interlinking can be performed at any time during a battle and during this process, powerful Ouroboros Arts can be utilized without limit, however the Heat Gauge will slowly increase over time. A powerful Talent Art should be used before Interlinking is released once the Heat Gauge is full.[4]


An Ouroboros is an ancient symbol depicting a serpent, dragon or worm that eats its own tail, as a representation of the continuous cycle of life and death, and by extension anything of a circular or recursive nature. The word comes from the Ancient Greek οὐροβόρος meaning "tail-devouring". The symbol was adopted in Gnosticism and Hermeticism to symbolize the cycle of life, death, and rebirth.


  • Even though Moebius look like Ouroboros, they seem different as they are the result of the transformation of a Consul, and as Ouroboros are considered by both nations as particularly dangerous beings.
  • Xenoblade Chronicles 3 director and producer Genki Yokota stated that Ouroboros originally looked more robotic earlier in the game's development.[5]





  1. Xenoblade Chronicles 3 Launches for Nintendo Switch on July 29, Business Wire, published April 19, 2022, retrieved April 19, 2022.
  2. Xenoblade Chronicles 3 Direct, YouTube, published June 22, 2022.
  3. @XenobladeJP, Twitter, published July 5, 2022.
  4. @XenobladeJP, Twitter, published July 5, 2022.
  5. Ask the Developer Vol. 6, Xenoblade Chronicles 3–Part 1, Nintendo, published July 26, 2022, retrieved July 26, 2022.