Umbra

Personality and Backstory
Umbra is the sole entity in the universe which shares her name, the universe of Umbra in which the planet Shiyd exists in.

Appearances and Importance
Umbra is the entity which created the four Umbran to protect Shadows and counter each other. She created them in pairs; first, she created Sol and Luna, to aid the Shadows in establishing some kind of stability, but no more. Second, she created Kali and Cai, to control and balance the unity and chaos of Shadows.