- "And at last, compassion is offered to us all." --The Entity-possessed Sinestro speaking of Proselyte's creation/transformation.
The emotion of compassion was created from the White Light of Life after the Darkness mangaged to split it into seven component aspects. When this emotion was first diverged from the White Light, it became tied to the Indigo Light. Proselyte was the first sentient being to experience this emotion, and thus tap into the power of the Indigo Light. Because of this, it became the living embodiment of the emotion.