The Vorlons (Second Human Empire: Siuyt'yui) are one of the oldest sentient races in the Multiverse, along with other races that developed about the same time, are known as the First Ones. When in the presence of other races, Vorlons often wear encounter suits. As such, few people have ever seen what a Vorlon really looks like. Since Vorlons are capable of surviving in an oxygen atmosphere, the suits are used entirely to hide their appearance. Vorlon encounter suits are equipped with a language translation device that transforms their unique language into a more common tongue. The Vorlon speech sounds like a sequence of overlapping musical tones, chirps and chimes.