Ouroboros is a fusion mechanic between two main characters, making them a more powerful unit called the Ouroboros in Xenoblade Chronicles 3! Read on to know more about Ouroboros Mode including how to unlock, use, and upgrade it!

How to Unlock Ouroboros Mode

Unlock the First 3 Forms by Finishing Chapter 2

Keves Squad Ouroboros Forms
Noah	Lanz	Eunie

The first 3 Ouroboros forms you can unlock will be those of the Keves Squad - Noah, Lanz, and Eunie. To get them as permanent unlocks for open-world combat, finish Chapter 2 of the main story.

Chapter 2 Walkthrough

Unlock the Next 3 Forms by Finishing Chapter 3

Agnus Squad Ouroboros Forms
Mio	Taion	Sena

The Agnus Squad - Mio, Taion, and Sena - will have their Ouroboros forms unlock much later in the story. To get them as permanent unlocks for open-world combat, finish the lengthy Chapter 3 of the main story.

Chapter 3 Walkthrough

How to Use Ouroboros Mode

All Ouroboros Modes
Ouroboros Interlink	Ouroboros Chain Attack

Use the Interlink to Transform in Battle

Once you have the Ouroboros Interlink unlocked, head into combat and select the character you want to use as an Ouroboros. When you have the right character selected, hit the Left D-Pad button to engage the Interlink which transforms the character to their Ouroboros form.

1	Hold and use or to cycle through characters.
2	When you have the character you want, press to engage the Interlink and transform into an Ouroboros.
3	Press , , or to use your Ouroboros Combat Arts.
4	Press to use your Ouroboros Talent Art once it's charged.
5	To exit the Ouroboros form, press .

Use Switch to Change Ouroboros Forms While Interlinked

Once you unlock the Ouroboros forms of Mio's squad, you can freely switch between Interlinked Partners while using your Ouroboros. Press the Up D-Pad button while in one form to switch into the other.

Build Up Interlink Levels to Use Ouroboros Chain Attacks

If one of your characters manages to reach Interlink Level 3 during combat, transforming and using the Chain Attack while in Ouroboros form will give you the option to perform an Ouroboros Chain Attack. This is a series of 2 special Chain Orders that deal a massive amount of damage when completed.

Note: Ouroboros Chain Attacks only become available after you unlock the Agnus Squad Ouroboros forms and finish Chapter 3 of the main story.

1	Hold and use or to cycle through characters.
2	When you have the character you want, start building up their Interlink Level by using Fusion Arts. At the same time, build the Chain Attack Gauge in preparation for the Ouroboros Chain Attack.
3	Once you charge the Chain Attack Gauge and reach Interlink Level 3, transform into an Ouroboros by pressing .
4	When your character is in their Ouroboros form, press to start the Chain Attack.
5	Select the Ouroboros Chain Order (this will be the only option) to start the Ourobros Chain Attack.
6	Complete it using the available party members in order to deal a massive amount of damage.
7	Repeat steps 5 and 6 when Reactivation occurs and a new Ouroboros Chain Order becomes available. Note: When using this method, only 2 Chain Orders can be completed rather than the usual 3.

How to Raise Interlink Level

Complete Chain Orders of Interlinked Characters

Aside from the Ouroboros-only Chain Attack, you can also get Ouroboros Chain Orders in a regular Chain Attack by completing the orders of Interlinked Characters. Complete the Chain Orders of either Noah & Mio, Taion & Eunie, or Lanz & Sena to get an Ouroboros Chain Order to spawn.

Note: You will know that you unlocked an Ouroboros Chain Order if the reactivation screen has a colored ring around it. This means an Ouroboros option will be available to use during the next chain.

Ouroboros Combat Tips

Ouroboros Combat Tips
Use Fusion Combos to Build Up Interlink Levels Use the Ouroboros Form to Dodge Damage Do Not Set Paired Characters as Healers or Defenders Cancel Attacks Into Arts to Charge the Talent Art Pay Attention to the Overheat Meter Cancel the Ouroboros Form Before Overheating

Use Fusion Combos to Build Up Interlink Levels for Stronger Arts

Some Ouroboros Arts will only get their full effects at Interlink Level 3. You can see your current level to the left of the Ouroboros symbol at the bottom left of the screen.

To level up the Interlink, use Fusion Arts as much as possible. This builds up the Interlink level to max, allowing you use Ouroboros Arts with their full effects in play.

How to Use Fusion Arts

Use the Ouroboros Form to Dodge Damage

While it is ideal to wait until Interlink 3 to transform, some of the more difficult fights will require you to dodge continuous or burst damage coming from enemies. If you find yourself at low HP and still taking aggro, consider transforming to become immune to damage.

This tactic is particularly useful when dealing with unique monsters that have a high damage Enrage Phase. However, do note that HP does not recover while in Ouroboros form even when healed by allies. Transforming while on low HP will mean you still re-appear later with low HP.

Do Not Set Paired Characters as Healers or Defenders

If you aren't partied with a Healer or Tank Hero, do not turn any of the pairs into your party's only Healers or Defenders. This avoids the problem of one pair transforming and leaving with with either no heals or no tanks to soak up damage.

Since Defenders and Healers are the core of combat when fighting difficult enemies, make sure not to double-up the class types of paired partners unless they are both Attackers.

Cancel Attacks Into Arts to Charge the Ouroboros Talent

In order to charge up the Ouroboros Talent Art (special attack, A button), make sure to cancel your attacks into Arts. Ouroboros skills have no cooldown, so it's all a matter of consistently chaining attacks into Arts until you have your Talent Art charged and ready.

To know if you are attack cancelling successfully, pay attention to your character when you use an art. You will know if you successfully canceled an attack if a blue ring appears after you use your Art.

How to Cancel Attacks

Pay Attention to the Overheat Meter

Ouroboros forms have a time limit in the form of the Overheat Meter, building up heat the longer your Ouroboros stays on the field. Actions such as using Arts also contribute to overheating, speeding up the process as you chain your Arts together.

You can view how much heat your Ouroboros form is getting by looking at the Ouroboros symbol (bottom left of screen) or at the Overheat bar next to your character icon on the left side of the screen. Once it hits the max amount, your Ouroboros will go into Cooldown mode, preventing you from using it for a time.

Cancel the Ouroboros Form Before Overheating

If you cancel the Ouroboros form before it overheats, the cooldown will be shorter. Make sure to cancel just before overheating to ensure that you are able to use the Ouroboros form multiple times in a single battle. To cancel your Ouroboros form, hit the Down D-Pad button while transformed.

How to Upgrade the Ouroboros

Farm SP to Purchase Upgrades

Before you can start thinking about upgrading your Ouroboros, you will first need to farm Soul Points or SP. This special type of currency is used to purchase the many different upgrades, Skills, and Arts that are available for your Ouroboros.

You can usually get SP by completing quests, discovering special landmarks and locations, and even opening containers you find scattered around the world.

SP Farming Guide

Purchase Ouroboros Upgrades from the Soul Tree

The Sould Tree is a special upgrade menu that allows you to purchase upgrades for your Ouroboros. These include Skills, Arts and their upgrades, Overheat upgrades, and stat upgrades. To view the Soul Tree, open up the character menu and navigate to Characters > Interlink > Soul Tree.

Soul Tree Upgrade Priorities

Upgrade Type	Priority Reason
Learn Skill	Ouroboros have no skills when you first start out. Make sure to prioritize getting these from the Soul Tree to get a large boost in power.
Heat Control	Scattered throughout the tree are Heat Gauge upgrades that gradually reduce the Ouroboros' rate of overheating. Prioritize these to get the most out of your transformations.
Enhance Art	The farther you get into the game, the more powerful your Ouroboros form has to be to deal with enemies. Prioritze Enhance Art upgrades to strengthen your primary source of damage.

Use the Soul Link to Share Upgrades

Since Ouroboros Interlinks are between two characters, each character pair will get 2 Soul Link slots to use at the Soul Tree. Soul Links allow you to equip two upgrades from your paired character's Soul Tree, borrowing its power to strengthen your own.

For example, if Mio's Soul Tree has an upgrade that raises Critical Rate by 15%, then Soul Linking it to Noah's Ouroboros will grant his form +15% Critical Rate as well.

Can Be Soul Linked	Cannot Be Soul Linked
・Learn Art ・Enhance Art ・Enhance Skill ・Enhance Talent	・Raise Ability ・Learn Skill ・Heat Gauge

Tip: Heat Gauge upgrades are your best bet for early Soul Linked upgrades. Since it is difficult to rack up enough Role Action Points to charge your Talent Art, longer Ouroboros times will greatly help the experience.

What is Ouroboros?

Fusion of 2 Characters

Interlink 2 members of your party to fuse into a powerful form called an Ouroboros. When in Ouroboros mode, the 2 characters you've chosen will turn into a single unit and have access to Ouroboros arts.

Story Related Implications

The Ouroboros form and the Interlink system both play a large part in the story of Xenoblade Chronicles 3. Being one of the few individuals capable of fighting the mysterious forces of the Moebius, our heroes must discover the secret behind these powerful transformations that they now possess.

XC3 Story Explained

Xenoblade Chronicles 3 Related Guides

Tips and Tricks

Tips and Tricks

Gameplay Tips and Tricks
Battle System and Combat Guide	Ouroboros Guide: How to Interlink
How to Farm Nopon Coins	How to Fast Travel
Gem Crafting Guide	How to Raise Affinity Level
All Field Skills and How to Unlock	How to Run From Battle
How to Change Characters	Soldier Husks Guide
Training Drills Guide and Completion Rewards	How to Use Combos
Missables and Points of No Return	How to Perform Chain Attacks
Amiibo Compatibility Guide	How to Use Talent Arts
CP Farming Guide	Best Accessories For Each Class
Best Gems to Craft	SP Farming Guide
How to Use Fusion Arts	EXP Farming Guide
Best Classes for Each Character	Best Recipes and Dishes
Best Hero Tier List	New Game Plus
Best Arts for Each Class	Gold Farming Guide
All Shards Locations	Challenge Battle Guide
Inoswap Guide	Noponstone Farming Guide
Nopon Archsage Guide	HD Ether Cylinder+ Guide
Beginner Guides
How to Cancel Attacks	How to Use Auto-Run
How to Save	Stat Guide: All Stats Explained
List of Enemy Types and Effects	How to Adjust and Change Game Time
List of Controls	What Are Rest Spots?
How to Heal Your Party Members	Skirmish Guide: Which Side to Choose?
How to Revive Allies	All Status Effects Explained
How to Open Locked Supply Drop	All Ferronis Hulk Locations
All Secret Area Locations	Ship Controls and How to Move
All Colony Locations	-
FAQ
Flame Clock Explained	What Happens If You Die?
Difficulty Setting Differences	Story Explained
What Does Cleaning Equipment Do?	How to Customize Your Character
How to Change Outfits	How to Get Bonus EXP
How to Raise Interlink Level	How to Skip Cutscenes
How to Change Language	Warning Level Meaning and How to Check
What Does Art Follow-Up Do?	How to Make It Rain
All Swimsuit Outfits From Expansion Pass DLC	-