Cassian Yae Caelestis

Returnal ~ Origin
Cassian Yae Caelestis (now Cassian Viator Caelestis) is the Eitr son of (Ex-)Emperor Thordan and Juno Wir Caelestis's twin brother. He is one of the Lost Voyagers of the world of Eryr that traversed Mare Lamentorum and returned from the fog. After his voyage, Cassian left for Raulla and declared that their god was a deceiver, committing high heresy. He also publicly revealed that he is the son of Thordan Zos Caelestis. Cassian was judged by a Raullan tribunal and sentenced to exile from both Raulla and Etheris.

He and Juno were the lightbearers of the Lost Voyagers who managed to survive the lighting through cooperation.

Cassian's current whereabouts are unknown. It is estimated that he keeps himself near Etheris or possibly in Cartheneau. He has been recognized as an enemy to the Empire of Etheris and categorized as a Nightmare-level threat. He plans to dethrone Alda Ancalagon and become the king of Eryr. He also directly opposes the Central Ministry.

Murmur ~ Vox Mundi
Cassian's murmur is the ability to directly communicate with the world, which makes him able to request the intervention of the natural forces themselves. This is an extremely versatile ability that has the possibility to perform all kinds of miracles, from strengthening Cassian and casting complementary spells, to summoning the world's very guardians to assist him.

Weapon ~ Astra
Cassian's weapon of choice is a floating star-shaped mechanism that functions as a casting device and amplifier. This contraption was crafted and enchanted by Cassian himself, including the golden alloy and glass that make up its pieces. This device is highly versatile and allows Cassian to fight at all ranges.

Handwear ~ The Hand of the Emperor
Cassian holds a distinct, seemingly indestructible, massive scaled golden gauntlet on his right hand. The purpose of this item is unknown.

Trivia

 * Cassian's name is a reference to Cassius Gaius Longinus, one of the leading conspirators of the plot to assassinate Julius Caesar.
 * His skill at handling spears references Saint Longinus, the soldier that confirmed Christ's death with his spear.