A Legendary mutant and its Elite versions can only be bred by cross-breeding the same mutant with any another mutant which shares at least one gene type. Therefore, you must acquire one of them through the ways other than cross-breeding in order to proceed to the next step for breed its Elite versions.
Some Legendary mutants are excluded permanently from these breeding rule since the change at May 26th 2016 which allows Psy Captains to breeding them just normally like other breedable mutants, regardless of either using the same one or requires specific parents.
The list below all breedable Legendary mutants:
Some Legendary mutants that aren't listed above can partially be bred during the limited Breeding Event, and some temporary breeding rules may require specific parent(s) to breed them.
- ↑ Information : You can now breed 20 Legendary Mutants!
- ↑ NEW BREEDING EVENT, BREEDING EVENT: TO INFINITY AND BEYOND, BREEDING EVENT: JURASSIC DEAD, BREEDING EVENT: RAISING THE DEAD, BREEDING EVENT: GIRL POWER!, BREEDING EVENT: MAGIC