According to the Order of Mata Nui, it was not up to them to question destiny, as decreed by the Great Spirit Mata Nui.
If a Toa team failed to achieve their destiny before their deaths, that destiny would not be accomplished by someone else. Every Toa had a destiny that was theirs and nobody else could do it in their place.
Destiny was not transferrable. If a Toa team died before their destiny was completed, the destiny would not get accomplished.
A Toa's ability to sacrifice their power before completing their destiny would depend on whether their destiny involved losing their Toa power.
Neither Mata Nui nor the Great Beings set destiny; it was a force beyond any single being's control.
It was possible to miss achieving one's destiny. If Vakama ignored Lhikan's request to bring the Toa stone to the Great Temple, for example, Vakama wouldn't have become a Toa even though it was his destiny.
As a rule, Toa had nobler destinies than to cause the death of another being, even one as evil as Makuta Teridax.
Toa could not be assigned new destinies even after they completed their original destinies.
Objects could have destinies, as evidenced by energized protodermis's ability to transform them. Examples of objects with known destinies would be the armor, tools, and masks of the Toa Nuva, which were transformed. Consciousness or free will were not prerequisites for having a destiny.
Normally, each member of a Toa team shared a destiny rather than each member having an individual destiny.
If a Toa team had a destiny that required all of its members to complete but one of their members dies before their destiny is completed, the rest of the team cannot complete their destiny and can therefore never become Turaga.
Every Toa had a destiny. Dying before completing their destiny was a problem.
Mata Nui couldn't actively decide destiny while asleep, but a being's destiny was set the day they came into being.
Mata Nui set destinies for most, but not all, beings in the Matoran universe.
It was still possible for Lesovikk to complete his destiny even though his teammates were dead.
A Toa's ability to complete their destiny without their team depended on what their destiny was. Takanuva fought alongside the Toa Nuva, but had a different destiny from them. Part of Norik and Iruini's destinies was to save the other Rahaga, so their destinies were different from their team's.
- Greg Farshtey wasn't sure if he himself considered destiny to be a virtue despite it being classified as one in the story. He preferred to think of it as fate. He believed humans could have multiple destinies and life might nudge them in those directions, but free will meant they could choose not to. Among the Matoran, he believed certain things were "hardwired" into them, determining who could become a Toa or be transformed by energized protodermis and who could not.