The Emissary Is a messenger of The (corrupted) Church of the Light Spirit.
Looks like a medieval European archduke that wears clothes of someone related to the church.
A cruel gay
Boy to Boy Relationships
"I love men more than women."
"I love men as I love my ramen."
He/She shows an interest for the Hero at episode 8. This is shown when he called the Crimson Scholar a heretic when in truth he is just jealous for her living with the Hero under one roof.