Soul Shards of Theta: Origins Saga

Thetatropolousvsgholtazsr Sigmaakronosvexsithkada, was the Doctor's only child with the Master. The child that's death forced the two friends apart... and inspired a legacy of death and decay... a child that eventually returned from the dead, although not by choice, multiple times, only to die again and again.

The last time was by an Eldritch abomination. A living manifestation of everything wrong with the universe. The beast stole The child's soul, and bound it to a phylactery, enslaving them as a weapon against the Doctor. Knowing the Time Lord Victorious dare not hurt him.

However, in his last act of free will, the child destroyed his own phylactery. He should have been erased from existence, as a Phylactery is an artifact to contain a mortals very soul. Binding them to the mortal world, while their body becomes an undead monster, unable to die.

Destroying such a container... should have destroyed their very soul. Nothing should have been left but shards, unable to move on, and unable to return to life.

But the universe herself thought such an act should be rewarded. And so gathered the soul fragments, patching them together with traces of different Cosmic entities, until she managed to form 6 distinct individuals. Allowing them to be reincarnated to humble families. Living quiet lives, until the day they found each other.