What is actually confirmed
Mutations are one of only five things the developer names in the official Roblox description:
Roll dice and reveal insane Anime characters! Upgrade your dice to gain even more luck! Build the strongest team possible! Collect rare Anime Characters and mutations! Money generates while you are offline.
That sentence confirms three things and nothing more. Mutations exist. They are collectible. They appear on anime characters. It does not tell you what a mutation does, how often one appears, what it is called, or whether it can be applied, rerolled or removed.
That is the honest state of the evidence, and it is worth stating before any table, because the searches for "anime dice mutations" return a lot of confident pages that are quietly inventing percentages.
Confirmed: mutations are a real collectible in the game, named by the developer, and they attach to characters rather than being a separate item. Not confirmed: mutation names, effect values, drop odds, rarity tiers, whether mutations can be rerolled, and whether they stack with traits. No published source has measured any of these.
How mutations differ from traits
These two systems get merged constantly, and keeping them separate is the most useful thing on this page.
| Traits | Mutations | |
|---|---|---|
| Confirmed by the developer? | No — community terminology | Yes — named in the official description |
| Applied when? | At roll time, on every unit | At roll time, as a rare variant |
| Can you change it? | Yes — Trait Rerolls | Not documented either way |
| Resource involved | Trait Rerolls (from codes) | None documented |
| Collectible? | Not framed as a collection | Yes — explicitly a collection target |
The practical distinction: a trait is a passive that every unit carries and that you can overwrite with a reroll. A mutation is a state a pull can arrive in, and the official description frames it as something you collect rather than something you apply. The traits page covers the rerollable side in detail.
The one rule that matters: inspect before you sell
Because mutations are a rare variant of a normal pull, the risk they create is not that you will misplay them — it is that you will sell one without noticing. Community guidance repeats this warning consistently: check for a mutated character before clearing your inventory.
The mechanism is easy to see why. Fast rolling plus a full backpack is the normal end state of a session. Storage fills, you open the sell menu, run Equip Best, and dump everything else. If a mutated unit was not on your active lineup, an indiscriminate sell takes it with everything else.
So the routine is:
- Roll until storage is close to full, not until you notice it is full. A full backpack silently discards rolls, and a recorded session shows a player rolling for a while without realising they were receiving nothing.
- Open the inventory and scan before selling. Look for the mutation indicator on each unit rather than trusting memory of what you pulled.
- Run Equip Best. This protects your strongest units in the active lineup.
- Sell second, never first. This ordering is stated by every source that discusses inventory management.
- Inspect anything that looks different before it leaves your account. There is no buyback for a sold unit.
Tracking mutations in your Index
The Index — the book icon on the left edge of the HUD — is the collection log of units you have seen. Community sources describe it as recording characters you have pulled and helping identify rarities or collection entries you are still missing, and mutations are explicitly described as part of the collection system.
The Index does not appear to publish odds, and its completion rewards are described as slow. Its real value is different: it is the only in-game record of what you have already pulled, which makes it the place to check before you decide whether a mutated unit is unique to your account or a duplicate.
Reading a mutation's effect
No effect table exists, so if you want to know what a mutation does, you have to measure it the way you would measure a trait:
- Record the cash-per-second figure on the pad before anything changes.
- Note the mutation name and the unit rarity, as displayed.
- Compare against an unmutated unit of the same rarity if you have one. This is the only clean control available.
- Write down the date. The developer ships numbered updates on a monthly cadence, and balance changes at this stage of a game's life are normal rather than exceptional.
A mutation that changes pad income is an economy mutation. One that changes nothing visible on the plot may affect Tower combat, or may affect something that only shows in the Index. Both are plausible; neither is documented.
Where mutations sit in your priorities
Mutations change what you do with a unit, not what you do next with your account. The core progression decisions are unaffected:
- Your dice tier decides which pool your rolls draw from, mutation or not. See the dice ladder.
- Your Luck upgrades decide how deep into that pool you reach.
- Rebirth gives the permanent multipliers that make everything above faster.
A mutation is a bonus on top of those, and the correct response to finding one is to keep the unit and inspect it — not to restructure your build around it. The one exception is if the mutated unit is also the rarest thing you own, in which case it should be on your best pad and is a legitimate candidate for a Grade upgrade.
Why this page is short on numbers
Because there are no numbers to give. Every mutation odds figure circulating for this game is unsourced, and an invented percentage is worse than an admitted gap — you cannot tell it is wrong until you have already acted on it. The developer has published no unit stats, no roll odds and no mutation probabilities, and there are no dated patch notes to check against.
If a mutation odds table appears that traces back to a first-party source or a recorded in-game capture, this page will carry it with a date attached. Until then, the only mutation data that matters is on your own account.