Lumina Dragons received their names from their highly reflective scales, which—at times—seem to glow. They are vain, always strutting about and preening incessantly; if one of their scales has so much as a scratch or a defect, they’ll remove it. Luckily, their scales grow back quickly, and each new growth is more beautiful than the last. These narcissistic dragons live in small groups and prefer to surround themselves with beauty. The females guard their territory and eggs while the males search for vegetation to eat.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

White, for some reason, loves to play hide and seek. He will find the best places, hide in them, then shock the first dragon he sees by jumping out at them and calmly saying "Dispensing product.". Usually, after he says this, he launches a volley of plucked, imperfect scales at the opposing dragon, causing quite a bit of confusion.

As he works for GLaDOS in the Aperture Canyons, White is required to startle andor annoy the Republicator test subjects, making it harder for them to finish the test. GLaDOS tends to use each of the Turret siblings for what they are best at--which, for White, equals supreme irritation for others.