Quick answer
Fusion is a three-for-one reroll for duplicate pets, not a guaranteed profit button.
What is confirmed
Dated community captures agree that the machine requires three pets of the same species, consumes all three and returns an egg of that species. The result must hatch before it can be evaluated.
What still needs a live check
Reports conflict on whether every fusion is free, whether a cash fee scales with the input, and whether the result is guaranteed to be stronger. Read the amount shown on your own Fuse button and never assume a mutation or upgrade.
Best way to use this information
Record the three input pets, their visible income and mutation status. Fuse only duplicates you can afford to lose, screenshot the displayed fee, then compare the hatched result with the total income you sacrificed.
Sources and verification
Researched and reviewed on September 22, 2026. We compared the official Roblox listing with dated community documentation. The live game interface and creator announcements always take priority when an update changes a mechanic.
Want the next verified discovery?
We publish short findings, tests, and update notes as soon as they are ready.
