Vs. Endeavor
  • Climax Battle
  • 4 runs

Vs. Endeavor

First run
Jan 1, 2025 00:00 – Jan 16, 2025 23:59 (JST)
Last run
Apr 28, 2026 00:00 – May 3, 2026 23:59 (JST)
Unlock
Clear Main Quest 5-9 (Normal)
Climax Emblem (Vs. Endeavor)

Runs

4 runs of this boss. Pick one: the dates, recruit, Event Shop lineup and missions below follow it.

Run 3 of 4
Announced
Dec 25, 2025 12:00 (JST)
Event Open
Dec 27, 2025 12:00 – Jan 6, 2026 23:59 (JST) 11 days
Reward Period
Until Jan 8, 2026 23:59 (JST)
Missions
2 daily + 29 ongoing missions30 a day · 1,415 from the ongoing missions
Recruits that started during this run (2)
Every run at a glance
RunBattlesRewards untilShop rowsMissionsEmblems from missionsLinked recruit
Run 1Jan 1, 2025 – Jan 16, 2025Jan 20, 2025302 + 3030/day + 710New Year! First Hero Fun of the Year Recruit
Run 2Jul 22, 2025 – Aug 3, 2025Aug 6, 2025302 + 3130/day + 1,650—
Run 3Dec 27, 2025 – Jan 6, 2026Jan 8, 2026302 + 2930/day + 1,415—
Run 4Apr 28, 2026 – May 3, 2026= battles end342 + 33500/day + 3,290Once-Daily Free 10x Recruit! Climax Battle Select Recruit: Vs. Endeavor

Classes at a glance

ClassLv.HPPhases (HP floors)Rec. BPEmblems / clearFirst clear (once)Every run
CLASS B4077,7772 (40%)110,000≈60—
  • ×50
CLASS A60333,3332 (40%)180,000≈120—
  • ×50
CLASS S80555,5553 (65% · 30%)240,000≈320—
  • ×50
CLASS SS1301,129,5554 (80% · 60% · 25%)—≈400
  • ×50

Emblems per clear are the expected value of the two drop rows (100% + 50%). “First clear (once)” is the quest's own first-clear reward; “Every run” is a second clear reward the data keeps per run, so it most likely paid out again in every run (inferred).

Battles

CLASS B

  • Rec. BP 110,000
  • Phase 2 phases
Clear reward (every run)
  • Hero Gem×50
Drops
  • ×40100%
  • ×4050%

≈ 60 Emblems per clear (expected)

Recommended
  • Status Ailment Null
  • Bullseye
  • Piercing Shot

Opponents

  • DST

    EndeavorBossPhase target

    Lv. 40HP 77,777Power ≈10,700Speed ≈178DEF 100Crit 10%

    • Burning 100%
    • Frozen 50%
    • Frostbite 50%
    Traits & skills

    ■Traits
    ・Takes reduced burning and bleeding damage.
    ・Has immunity to skills sealed, confusion, paralysis, binding, fear, freezing, meat lump, and stun.
    ・Gains Power UP after temporary status ailments of his opponents are canceled 1 time (multi cancels per action=1 cancel).
    ・Gives Cooldown Time UP to all of his opponents after temporary status ailments of his opponents are canceled 7 times (multi cancels per action=1 cancel).
    ・Has the ability to land a bullseye.
    ・Has Power DOWN, Skill Impact DOWN, Action Skill Impact DOWN, Plus Ultra Move Skill Impact DOWN, and Buff Block Immunity.
    ・Gives all of his opponents Status Ailment Null after receiving 1 attack from an opponent with bullseye (multi hit attacks=1 attack).
    ・Gives all of his opponents Status Ailment Null after receiving 1 attack from an opponent with piercing shot (multi hit attacks=1 attack).
    ・Every time his HP falls to a set amount or lower, a new phase begins, and his behavioral patterns change.
     *He becomes invincible when starting a new phase.

    ■Main Skills
    ・Deals damage to all of his opponents and converts their Burn status to Scorch.
    ・Deals damage to all of his opponents and gives them Power DOWN.
    ・Deals damage to a single opponent. /Gives himself Skill Impact UP and cancels his temporary status ailments.
    ・Gives himself Power UP and piercing shot.
    ・Deals damage to a single opponent and gives them Critical Resistance DOWN.
    ・Deals damage to a single opponent and gives them Critical Skill Impact DOWN. /This skill gains Skill Impact UP if the opponent's HP is below 50%.
    ・Gives Cancel Status Ailments Block to all of his opponents.
    ・Gives himself piercing shot. /Cancels all temporary last stand effects of a single opponent and deals damage to them. /Burns all of his opponents. /Gives himself Burn Hit Rate UP and cancels his temporary status ailments. *Plus Ultra Move

  • DST

    Shoto Todoroki

    Lv. 40HP 63,600Power ≈6,700Speed ≈358DEF 100Crit 10%

    • Burning 50%
    • Frozen 50%
    • Frostbite 50%
    Traits & skills

    ■Traits
    ・Has the ability to nullify status ailments.
    ・Has Buff Block and Speed DOWN Immunity.
    ・Gives all of his opponents Status Ailment Null after receiving 1 attack from an opponent with bullseye (multi hit attacks=1 attack).
    ・Gives all of his opponents Status Ailment Null after receiving 1 attack from an opponent with piercing shot (multi hit attacks=1 attack).
    ・Burns all of his opponents when he gets knocked out.
    ・Gives Skill Impact UP to one of his allies (excl. himself) when he gets knocked out.

    ■Main Skills
    ・Deals damage to all of his opponents and burns them. /This skill gains bullseye.
    ・Deals damage to a single opponent, and gives them Critical Hit Rate DOWN and Critical Skill Impact DOWN.
    ・Gives Power UP and Speed UP to all of his allies.
    ・Deals damage to a single opponent, and gives them Plus Ultra Gauge DOWN and Cooldown Time Extension. /This skill gains bullseye and piercing shot. *Plus Ultra Move

HP = base + growth × (Lv − 1) + the battle's bonus, the formula the game server uses. Power and Speed are worked out the same way (inferred, marked ≈).

Phases

  1. Phase 1

    Endeavor

    Auto Skills

    • Strictness
      Reduces burning and bleeding damage they receive by 95%, and gives them immunity to skills sealed, confusion, paralysis, binding, fear, freezing, meat lump, and stun.
    • A Stern Shout
      Increases their power by 5% after temporary status ailments of an opponent are canceled 1 time (multi cancels per action=1 cancel), up to 10 times.
      Increases the cooldown time of all of their opponents by 1% after temporary status ailments of an opponent are canceled 7 times (multi cancels per action=1 cancel), up to 1 time.
    • Superheated
      Gives them the ability to land a bullseye and immunity to Power DOWN, Skill Impact DOWN, Action Skill Impact DOWN, Plus Ultra Move Skill Impact DOWN, and Buff Block.
      Gives all opponents the ability to nullify 1 status ailment after they receive 1 attack from an opponent with bullseye (multi hit attacks=1 attack).
      Gives all opponents the ability to nullify 1 status ailment after they receive 1 attack from an opponent with piercing shot (multi hit attacks=1 attack).

    Skill rotation

    1. Flame Knuckles
    2. Flame Burst
    3. Flame Knuckles
    4. Flashfire Fist: Hell Spider
    5. Flame Burst
    6. Flashfire Fist: Hell Spider
    7. Supreme Conquest
    8. Flashfire Fist: Hell Spider

    Shoto Todoroki

    Auto Skills

    • Natural Airhead
      Gives them the ability to nullify status ailments, and immunity to Buff Block and Speed DOWN.
    • Temperature Maintenance
      Gives all of their opponents the ability to nullify 1 status ailment after they receive 1 attack from an opponent with bullseye (multi hit attacks=1 attack).
      Gives all of their opponents the ability to nullify 1 status ailment after they receive 1 attack from an opponent with piercing shot (multi hit attacks=1 attack).
      Burns all of their opponents for 10 turns when they get knocked out.
      Increases Action Skill impact of a single ally (excl. themself) by 20% for 99 turns when they get knocked out. *This buff cannot be canceled, blocked, or restricted.

    Skill rotation

    1. Raging Fist
    2. Fire Dance
    3. Raging Fist ×2
    4. Fire Dance
    5. Surging Heat
    6. Freezing Sunrise ×3
  2. HP ≤ 40% (31,111)Phase 2

    Phase moveRaging Fire

    Endeavor

    Can you withstand my flames?

  3. Phase 2Final phase

    Endeavor

    Auto Skills

    • Ferocious Red Flames Destroy Mode
      Restores their damage taken by 30%, gives them immunity to Recovery Block, and gives them the ability to multi-use skills 2 time(s).
      Gives them piercing shot when their HP is below 15%.
      Gives them resilience when their HP is below 5%.

    Skill rotation

    1. New Year's Fist: Jetburn
    2. Prominence Burn
    3. Flashfire Fist: Hell Spider
    4. Hellflame
    5. New Year's Fist: Jetburn
    6. Prominence Burn
    7. Flashfire Fist: Jetburn
    8. Flame Burst
    9. Flashfire Fist: Hell Spider
    10. Flashfire Fist: Jetburn

    Shoto Todoroki

    Auto Skills

    • Burning Eye Destroy Mode
      Increases power of all of their allies by 100%.
      Burns all of their opponents for 1 turn, every 2 turns.
      Decreases power of all of their opponents for 10% after they receive 2 attacks from a burning opponent, up to 5 times (multi hit attacks=1 attack).

    Skill rotation

    1. Freezing Sunrise
    2. Surging Heat
    3. Fire Dance

Each phase shows the Auto Skills of that phase's AI set; whether earlier phases' Auto Skills stay active is not in the data. Alternate-pattern states are decoded from the AI triggers (inferred).

Event Shop

Paid with this boss's Climax Emblems. The list follows the run picked above.

  • 5,000
    Limit ×1
    Total 5,000
  • [New Year's Resolution] Endeavor Orb αEvery run
    250
    Limit ×1
    Total 250
  • [New Year's Resolution] Endeavor Orb βEvery run
    350
    Limit ×1
    Total 350
  • 90
    Limit ×45
    Total 4,050
  • 15
    No limit
    —
  • 2,500
    Limit ×3
    Total 7,500
  • Climax Battle December UR Memory TicketEvery runUsed at: Climax Battle December UR Memory Ticket
    3,500
    Limit ×1
    Total 3,500
  • Limit Breaker UR FragmentEvery run · new limit each run
    200
    Limit ×1
    Total 200
  • Limit Breaker SR FragmentEvery run · new limit each run
    60
    Limit ×5
    Total 300
  • MAX Power! Ball (Small) ×5Every run
    5
    Limit ×7
    Total 35
  • Hold On! Health Ball (Small) ×5Every run
    5
    Limit ×7
    Total 35
  • Extreme Speed! Ball (Small) ×5Every run
    5
    Limit ×7
    Total 35
  • Small Screw (DST) ×5Every run
    5
    Limit ×5
    Total 25
  • Small Nut (DST) ×5Every run
    5
    Limit ×5
    Total 25
  • Extreme Speed! Pack (Large) ×5Every run
    5
    Limit ×15
    Total 75
  • Extreme Speed! Can (Large) ×5Every run
    5
    Limit ×15
    Total 75
  • Medium Cylinder (DST) ×5Every run
    5
    Limit ×15
    Total 75
  • Medium Chip (DST) ×5Every run
    5
    Limit ×10
    Total 50
  • Medium Battery (DST) ×5Every run
    5
    Limit ×15
    Total 75
  • Medium Light (DST) ×5Every run
    5
    Limit ×10
    Total 50
  • Intricate Gears (DST) ×5Every run
    5
    Limit ×10
    Total 50
  • Hold On! Health Pack (Large) ×5Every run
    5
    Limit ×15
    Total 75
  • Hold On! Health Bottle (Large) ×5Every run
    5
    Limit ×10
    Total 50
  • Hold On! Health Can (Large) ×5Every run
    5
    Limit ×15
    Total 75
  • Charged-up Cylinder (DST) ×5Every run
    5
    Limit ×25
    Total 125
  • Charged-up Battery (DST) ×5Every run
    5
    Limit ×20
    Total 100
  • Charged-up Light (DST) ×5Every run
    5
    Limit ×15
    Total 75
  • MAX Power! Pack (Large) ×5Every run
    5
    Limit ×15
    Total 75
  • MAX Power! Bottle (Large) ×5Every run
    5
    Limit ×10
    Total 50
  • MAX Power! Can (Large) ×5Every run
    5
    Limit ×15
    Total 75

Buying everything in Run 322,455(not counting the items with no limit)

Unspent Emblems carry over to the next run of the same boss; another boss's shop does not take them.

Rows kept from run to run have one purchase counter in the data, so their limits most likely count across all runs: the boss card can be bought once per account (inferred). Rows added anew each run start a fresh limit.

Climax Battle Missions

Run 3 of 4 Dec 27, 2025 12:00 – Jan 6, 2026 23:59 (JST) Open in Missions →

30 a day · 1,415 from the ongoing missions

Team missions ask for

  • All Might
  • Hawks
  • Denki Kaminari
  • Kyoka Jiro
  • Take on a Climax Battle 1 time.
    • Climax Emblem×30
  • Take on Climax Battles 2 times.
    • Stamina×50

The master data has no link from a mission to a run: they are matched by date (each mission's end falls inside one run) and agree with every mission that names a quest or pays an Emblem.

Dialogue

Show every line
  • First visit (CLASS B open)

    Endeavor

    Show me the power you've built up.

  • CLASS A unlocked

    Endeavor

    You've got some skill.
    Now I'll turn up the heat.

  • CLASS S unlocked

    Endeavor

    Not bad. Now make me get serious.

  • CLASS SS unlocked

    Endeavor

    I commend you for getting this far.
    Stay sharp for what's next!

  • CLASS SS cleared

    Endeavor

    Impressive. Take pride in your strength.
    Continue to surpass yourself.

Lines on the Climax Battle screen as you progress (when each one shows is read from the data: inferred).

How Climax Battles work

  • Unlocked by clearing Main Quest 5-9 (Normal).
  • CLASS B → A → S → SS: clearing a class unlocks the next.
  • No Stamina, no skip tickets, no turn limit, no team restrictions.
  • A boss changes phase at set HP thresholds; until the phase change plays, its HP cannot drop below the threshold.
  • Each class pays Hero Gems ×50 on its first clear of every run (inferred: the data keeps this reward per run); CLASS SS also gives the boss's UR card on the account's first clear ever.
  • Climax Emblems drop from every clear and carry over to the boss's next run.
  • Tries instead of Stamina: 3 a day*, shared by every Climax Battle, reset at 00:00 (JST). A defeat or a forfeit costs no try.
    *Inferred: the number is server-side; no run's missions ask for more than 3 clears a day, and many ask for exactly that.
The game's own help

What are Climax Battles?

Climax Battles are extreme difficulty challenges with the ultimate bosses.
Complete the highest difficulty level CLASS SS to get your hands on a new UR character.

You will receive Climax Emblems as a part of your completion rewards.
Use these Climax Emblems to purchase various items at the Climax Battle Event Gear Shop.

Climax Battles are not always open.
Once an event period closes, you will only be able to receive Mission Rewards and use Climax Emblems to purchase items.
After some time, you will no longer be able to access Climax Battles to receive rewards or use your Climax Emblems. Climax Battles will be closed until the next event period.

▼How to Unlock Climax Battles
Complete Main Quest Ch. 5-9 (NORMAL)

Classes

There are several tiers of difficulties in Climax Battles labeled with a different "CLASS".
The next CLASS becomes unlocked when you complete the previous CLASS.
The higher the CLASS, the more difficult your opponents will be.
In exchange, your rewards will get better as you climb up in difficulty.

The most difficult CLASS SS is quite the challenge, but you will receive a UR character the first time you complete it.

Tries

Instead of using Stamina, you will have a number of "tries" to use when taking on Climax Battles.

There is a limit to the number of tries that you can use. They reset at 00:00 (JST) every day.
You will not use up your tries if you are defeated or if you forfeit.
*The daily number of tries is for all Climax Battles.

Event Gear Shop

You can use the Climax Emblems you obtain to exchange with various rewards at the Climax Battle Event Gear Shop.

At the Event Gear Shop, you can exchange your Emblems with the UR characters that appear in battle as bosses, UR character pieces, UR character orbs, and more.

Even after one event period ends, Climax Emblems can be exchanged later in the next event period where that boss appears in battle.
However, Climax Emblems will not roll over if the boss that appears in battle is different.

Missions

You can obtain lots of different rewards by completing the various tasks given in the Climax Battle Missions.
You can check on the progress of your Missions by going to the Missions tab within Climax Battle.
*Climax Battle Missions will not be included in the main Missions area from the Home Screen.

There are two types of Missions—"Daily" and "Ongoing".

Tap on the "Claim" button after completing a Mission to receive your rewards.
Tap on "Claim All" to receive all of the rewards of Missions that you have completed.

Tap on "Filter" to see Missions based on their completion status.

Phases

During Climax Battles, a new Phase begins every time certain set conditions are met. This causes changes in attack patterns and sometimes triggers different animations.

When an animation is triggered because of a Phase change, HP will not go below a certain amount, and the opponent will not take any damage.

Data: the game's final master data (client 5.0.0). It holds one copy of each boss's battles, so early runs may have used other enemy stats or rewards.