Page "Daxam" Paragraph 6

Daxam is briefly invaded by the space tyrant Mongul II, and remade into the base of a splinter cell of the Sinestro Corps, the Mongul Corps.

Sodam Yat, utilizing the entity Ion, is then forced to sacrifice himself to turn Daxam sun yellow, granting superpowers to every Daxamite, and as a result the ability to repel the invaders.

However, a hooded Krona divests Ion from Sodam, freeing the young hero from the sun and restoring it to his red form, the sudden loss of powers decimates the population.