Mutations in Be The Final Boss can affect the ATK and HP stats of your Units/Minions. As of Update 1, there are three different mutations in Be The Final Boss: Shiny (30% stats buff), Cursed (100% stats buff), and Demonic (200% stats buff). There’s a random/unknown chance that every time you summon a unit/minion, it can have one of the three mutations. Our full guide below lists all the details and tips on how to increase mutation chances.
As you are rolling/summoning different units, you’ll sometimes come across units that have Shiny, Cursed, or Demonic text above their heads. These are mutated units, and they will cost more Souls than their base variants, but they’ll also have higher stats. In this Be The Final Boss mutations guide, we’ll tell you exactly how each mutation affects the stats of a unit and which mutation you should be targeting.
What Do Mutations Do in Be The Final Boss
Mutations in Be The Final Boss buff the ATK and HP stats of the units/minions that you summon at the Summon Altar. The table below lists all the mutations and their exact buffs in The Final Boss:
| Mutation | Description |
|---|---|
| Shiny | Buffs the ATK and HP of the unit by 30% Shiny units will have the text ‘Shiny’ above their heads and at the start of their name. |
| Cursed | Buffs the ATK and HP of the unit by 100% Cursed units will have the text ‘Cursed’ above their head and at the start of their name. |
| Demonic | Buffs the ATK and HP of the unit by 150% Demonic units will have the text ‘Demonic’ above their head and at the start of their name. |
The ATK and HP buffs result in the overall power increase as well. But the mutations will not affect the active and passive ability stats or the range stat.

How to Increase Mutation Chances in Be The Final Boss
If you want to get mutated units/minions in Be The Final Boss, there are two ways you can increase your chances:
- Use the Summon Altar during the Cursed Moon Weather. The Cursed Moon weather will buff the chances of each mutation by 2x. Right now, this is the only F2P method of increasing your chances of getting mutated units in Be The Final Boss.
- Buy the Double Mutation Chance gamepass from the Shop for 159 Robux. This gamepass has the same effect as the Cursed Moon Weather on mutation chances. The only difference is that this is a P2W method and the buff is permanent.

Be The Final Boss FAQs
The Demonic mutation is currently the best mutation in Be The Final Boss. It buffs the ATK and HP stat of the mutated unit by 150%. However, it is also the rarest mutation and can be very hard to get. The best chance to get this mutation is during the Cursed Moon weather event.
As of Update 1, units/minions can only spawn with one mutation. And, since there’s no way to add a mutation to a unit manually, the unit can only have one mutation at a time.
No, there is no node for increasing Mutation Luck in the Be The Final Boss Skill Tree. Purchasing the Altar Luck nodes will only increase rarity luck. It will have no effect on your mutation luck.
While you’re here, don’t forget to redeem the latest Be The Final Boss Codes for free Coins, Shards, and other handy freebies. We also have a detailed Be The Final Boss Weather Events guide that you should check out to learn all about the weather events and how to get the most out of them.