Mitch Watson, known as Onyx, is the high priest of the Church of the Dark Prince.
History
Mitch Watson joined the Church of the Dark Prince, a Satanist church, 12 years ago. Since then he's become the high priest. Though he likes the philosophy, he believes "the whole thing's a joke" and "it attracts a lot of weirdoes who take it way too seriously."
Chloe and Lucifer meet him while investigating Rose Davis's death.
