Yhwach.

Yhwach is the progenitor and king of the Quincy, as well as the overarching antagonist of the Thousand Year Blood War arc in Bleach. His is the biological son of the Soul King, the lichpin who holds the worlds of the living, the dead, and hueco mundo together. Originally, infant Yhwach could no speak, see, hear, or move. However, anyone who touched him received a piece of his soul, healing their physical or mental disabilities. Those people eventually died, and upon their death, their abilities, knowledge, and experiences returned to Yhwach, extending his own life and granting him functionality.