The aEnig's AI been out for a while now. Normally at this point, the wiki page would be completely filled out with both the abilties and the AI rotations by the person who normally does the event/GLEX boss section. However, Kyros' has 40 freaking unique abilities, and said person (who certainly isn't me and you cannot prove otherwise) cannot find the strength to do add it to the wiki in the normal formatting. However, questions still come abound regarding it, so here's a very informal guide regarding it.

References

• https://exvius.fandom.com/wiki/Brawler_Unbound
• AI link

Basic Tips/Info

• Only ATK/MAG is breakable.
• Kyros has a 20% chance/attack to use a ST counter that removes all buffs. This cannot provoked, but the damage can be covered.
• Kyros has high-ish ATK, but no passive stat buffs. Breaks are incredibly effictive, making him a pushover in most scenarios.
• In terms of damage, Kyros attacks are almost entirely physical attack-typed with no almost no accuracy. Therefore, all the damage can be completely evaded barring the one DoT and fixed damage. For those without evade, almost all the damage is ATK-scaling against your team's/tank's DEF.
• When break gauge > 0: Kyros has incredibly high defensive stats, and mild non-elemental immunity.
• When break gauge = 0: Kryos has significantly lower defensive stats, but gains more ATK and is completely immune to non-elemental damage.
• Don't die. No, seriously. You can get punished for it (see below).
• At 51%, Kyros starts using fixed damage at the beginning of his turns. They can still be evaded due to their typing.
• At 15%, it turns into a "soft" damage race. See below.

Attack Pattern

The fight can be divided mostly into 5 phases, which can be determined by the ability used when entering the phase:

1. The pain has only just begun! (Broken state)
2. Kyros is gathering energy in his fists.
3. One more down! No one can stop me!
4. Kyros gathers energy and approaches the party!
5. I will not be defeated!
6. "HP Check" (not a phase, but pretend it is)

The specifics will be explained below, but the when starting the fight, the ordering will be used...

1. Kyros is gathering energy in his fists.
2. One more down! No one can stop me!
3. "HP Check"

"Thresholds"

Upon hitting 51% HP, Kyros will begin each turn with new moves in 3-turn rotations. These are all fixed damage, but are physical attack-types, so evadable miragable/phys mitagable (and maybe coverable, but didn't check on coverage ignorability). However, these moves all have accuracy, so passive evasion will not work.

Turn 1-2:

• 41% - 51%: 1500 AoE damage
• 31% - 40%: 2000 AoE damage
• 21% - 30%: 2500 AoE damage
• 11% - 20%: 3000 AoE damage
• 00% - 10%: 3500 AoE damage

Turn 3:

• 41% - 51%: 4000 AoE damage
• 31% - 40%: 5000 AoE damage
• 21% - 30%: 6000 AoE damage
• 11% - 20%: 7000 AoE damage
• 00% - 10%: 8000 AoE damage

As noted, the first two turns of the rotation is fairly trivial, but the third turn is fairly impactful. Swipe-down guard that turn if needed. You could downgrade Kyros' 3-turn rotation by healing him above the HP thresholds, but its not worth the effort.

15%: Immediately enters "I will not be defeated!"
Healing above 15% will not change said phase.

The pain has only just begun!

This state is entered only when break-gauge depleted. As noted above, he gains more ATK and becomes non-elemental immune, but loses a bunch of defensive stats.

1. Kyros harmlessly yells at you. (threshold abilities above still happen, so not completely harmless sometimes)
2. Four ST physical attacks.
3. Dispels all buffs and 99% HP damage (physical-typed attack, may kill cover tank assuming it wasn't coded with ignore cover).
4. Three AoE physical attacks.

Kyros is gathering energy in his fists.

If gauge-broken, the rest of this phase is skipped upon Kyros being unbroken.

1. AoE MP suck (ATK-scaling)
2. More AoE MP suck
3. Massive physical AoE attack. Guarding/reraising is highly advised.
4. A random series of AoE (with MP drain) and ST physical attacks. AoE can occur no more than once/turn.
5. Same as T4 above.

Then, if it isn't his starting rotation, do the HP Check. If it is his starting rotation, then go to "One more down! No one can stop me!".

One more down! No one can stop me!

Like the phase before, if gauge-broken, the rest of this phase is skipped upon Kyros being unbroken.

One unique mechanic for this phase: if any unit is dead during this phase, Kyros will massively self-buff his ATK (can be dispellable, but don't rely on it). This currently is an unmapped active ID, but a possible guesses are either 1250% buff, or a flat 1250 boost (probably the latter). Some initial testing have discovered that this is a 300% ATK buff that can be stolen by Xon. That said, the arguments for this is weird, so its theorized that its an very old active id that just caps at that.

Anyways, his regular rotation:

1. Imperils fire/lightning/dark (125%). Self-dispel your team if needed (Bushido Freedom, dualcast dispelga trick, ...)
2. Three ST attacks. First is a dark physical that targets unit with highest MAG, and reduces MAG stat. Second is a fire physical that targets highest ATK, and reduces ATK stat. Third is a lightning physical that targest highest SPR and reduces ATK & MAG. All three attacks can be provoked.
3. Same as T2.
4. A random series of AoE (with MP drain) and ST physical attacks. AoE can occur no more than once/turn.
5. Same as T4.

Then HP check.

Kyros gathers energy and approaches the party!

Unlike the previous two, if gauge-broken, it simply resets this phases rotation.

1. AoE MP drain
2. Massive physical AoE attack. Guarding/reraising is highly advised.
3. Series of ST physicals.
4. Same as T3.
5. Same as T3.

Then HP check.

"HP Check"

Not a real phase, and after this check, it will continue with its intended phase proper. However, at each check, it will choose a phase at random (50/50 coin toss):

• HP > 50%: either "Kyros is gathering energy in his fists." or "One more down! No one can stop me!"
• HP < 50%: either "Kyros gathers energy and approaches the party!" or "One more down! No one can stop me!"

I will not be defeated!

Upon entering 15%, Kyros will immediately enter this phase and will remain in this until he wins/loses or gets gauge-broken. While not broken, he will maintain 90% damage mitigation and countdown towards his victory. Gauge-breaking will only reset the countdown.

1. 7-turn AoE physical DoT. Cannot be evaded/covered.
2. AoE physical damage all-status ailments.
3. AoE physical attack w/ 150% all-element imperil. Scales off of both ATK and MAG
4. AoE MP suck
5. AoE physical attack 90% stat breaks
6. AoE physical attack buff dispel stop
7. AoE dispel unresistable death (will continue using this ability until gauge-broken)

Team Examples

While untested due to daily limitation, the following example could theoretically work:

• Any physical cover tank, avoid attacking with this unit to avoid dispels (evasion helps immensely)
• Any healer with reraise, preference if they can also prevent status ailments/stop if you'll end up in the 15% phase for a while (eg: Blue/Lotus Mage Fina)
• Any ATK/MAG stat breaker, preferably above 80% (eg: Seeker of Freedom Vaan)
• Damage dealers, preferably either physicals with elemental-weapons equipped or mages due to the dispel counters
• Free slots (buffers for mirage/mitigation/survivability, and/or gauge-breaking)

If you have a long form team example, feel free to ping me so I can add it to a list that doesn't exist as of this writing.

Closing

Words go here.

Edits:

• Discovered that the threshold fixed damage has accuracy, something not seen before iirc
• Some testing regarding the death buff