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Trait Rerolls Guide

Traits are passive bonuses on your Champions. Trait Rerolls let you swap them for better stats — and Update 1 made them a core part of building a top-tier roster.

Last updated: 2026-07-06

What traits do

When you summon a Champion, it arrives with a random trait — a passive modifier that sits on top of the unit’s base multipliers. Traits can increase damage output, speed up training, amplify a specific stat or improve survivability in boss fights and PvP.

Not every trait is equal. A Champion with a weak trait is still usable, but rerolling until you land a strong passive is one of the highest-value upgrades in the mid game — often more impactful than rolling an entirely new unit.

How to reroll traits

  1. Lock your Champion in the Champions menu so it cannot be sold.
  2. Open the Traits section on that unit.
  3. Spend one Trait Reroll to roll a new passive. Each reroll replaces the current trait entirely.
  4. Repeat until you get a trait that matches your build, or stop when you hit something good enough for your current progression stage.

Trait Rerolls are a one-per-use item regardless of Champion rarity. A Legendary reroll costs the same as a Common reroll, so prioritize rerolling your highest-tier locked units first.

Where to get Trait Rerolls

Trait Rerolls entered the game with Update 1 (the Jujutsu Kaisen patch) and quickly became a staple code reward:

  • CodesUPDATE1 and UPDATE2PLAY each granted 12 Trait Rerolls; milestone codes like THANKYOUFOR50K and 100KFAVS included 10. Watch the active codes page after every patch.
  • Achievements and milestones — leveling milestones and quest completions occasionally grant rerolls.
  • Chests and events — golden Chikara crates and limited-time events can drop rerolls alongside Shards.
  • Boss rewards — some endgame content, including secret bosses, tie into reroll-related drops like the Malevolent Key from Update 1 codes.

Because rerolls arrive in batches from codes, redeem new codes immediately and bank rerolls before you start optimizing your roster.

Which traits to aim for

There is no single “best” trait for every player, but these priorities work for most builds:

  • Damage traits — best for boss farming and PvP. Prioritize these once your base stats are solid.
  • Multiplier traits — compound with your Champion’s existing stat bonuses and snowball training gains.
  • Training-speed traits — excellent early game when you are still pushing Total Power through training spots.
  • Durability traits — useful for Dimension 5–6 bosses and secret boss attempts where survivability matters.

Match traits to your main scaling stat. Chakra-scaling Fruits pair with Chakra-boosting traits; Strength builds want Strength or damage traits. Check the Champions tier list to see which units benefit most from rerolling.

Traits and the Update 1 JJK content

Update 1 (late June 2026) shipped alongside the expanded Jujutsu Kaisen content — secret bosses like Sukuna and Mahito, the Malevolent Key item from launch codes, and the Trait Reroll system itself. If you redeemed UPDATE1 or THANKYOUSUPPORT before those codes expired, you received a large reroll bundle plus a Malevolent Key for JJK-related content.

For the full timeline, see the update log.

Efficient reroll strategy

  1. Summon first, reroll second. Use the Champion Summon guide to land a high-tier unit, lock it, then spend rerolls on that unit only.
  2. Do not reroll Commons. Save rerolls for Epic and above unless you have a massive surplus.
  3. Stack with luck boosts. Use Champion Luck Boosts from codes like UPD3RELEASE when summoning, then reroll the result — two optimization steps in one session.
  4. Redeem codes before rerolling. Free reroll bundles from codes remove the need to grind rerolls manually.

Once your Champion traits are set, move on to dungeons for structured endgame farming and additional reward drops.

Frequently Asked Questions

What are traits in Anime Fighting Simulator?

Traits are passive stat modifiers assigned to Champions. They can boost damage, training speed, multiplier strength or survivability. Each Champion can hold one trait at a time.

How do I reroll a trait?

Open the Champions menu, select a locked Champion, and use the Traits tab. Spend one Trait Reroll to roll a new passive. Lock the Champion first so you do not lose the unit while experimenting.

Where do Trait Rerolls come from?

Codes (UPDATE1 and UPDATE2PLAY granted 12 each), milestone rewards, chests, achievements and certain boss drops. Check the active codes page after every update for fresh reroll bundles.

Which traits are best?

Damage-boosting and multiplier traits are generally top priority for boss farming. Training-speed traits help early progression. Match the trait to your main stat build — Chakra traits for Fruit users, Strength traits for punch builds.