'Light is what remains. Like you, I am concentrated, more powerful. I have become…something you cannot comprehend. Just call me Posi-Thorn.' -Posi-Thorn, Series II, Chapter 66

Appears in: Series II, Chapter 66;
Series III, Chapter 100

A representation of everything good about Thorn, which includes his love for Kuja. Thorn believed in his love so strongly, it overpowered Nega-Thorn, which led to his destruction. From now on, whenever Thorn uses his powerful Light element spells, his hair turns white-blonde and his eyes glow brightly. This is a left over effect from Finn.