The Ghost

"I've been here for that for a long time now."

While he was in conflict with his father, a doctor, Yeung Kwun's wife, Mary, was impressed by him and he joined the Red Flower Society.
Since then, he has been in charge of protecting the Yeung family.
He often does "off-the-books" work.
He shared a secret plan with Francis to bring in brothers Luk and Shawn to strengthen Yvet's security system in the wake of a heir dispute at the Red Flower Society.
He is highly loyal to the Red Flower Society and initially distrusts Yvet as acting head of the society.
He was distrustful of Yvet, who was acting as the head of the Red Flower Society, but gradually came to trust her as he learned of her abilities.
Now he follows Yvet like a shadow.