The Wioni was a pure energy species who often fought each other in a brutal series of Civil Wars once their Emperor/Empress dies, they're not native of the Multiverse but are native to a another Multiverse who had to leave it due to a brutal conflict that destoryed it, they died out around the same time the Zelius emeriage as a Multiversial power (did fought eight wars with the Zelius before they died out though)
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The Chaos Gods of the Warhammer Universe
The Man in the Moon