Cian Tuatha Dé

Cian Tuatha Dé is the father of Lugh. He trained him as an assassin.

Appearance
Cian is an adult man with short brown hair and mustache.

Personality
He has a cold-hearted side as an assassin, but at the same time, he is a loving parent who cherishes his wife and family. He is considered the strongest assassin in Tuatha Dé's history, but when he saw Lugh Tuatha Dé’s potential, he realized he was going to surpass him. He believes certain "infections" in the world can only be "cured" by assassinations and wants to make the world a better place. He didn't want his son to become an emotionless killer, which is why he taught him the value of human life.

Background
When Lugh was born, Cian explains that he will bring him into the Tuatha Dé's clan as the world needs them. He promises Esri Tuatha Dé that he won't let him die.

Initially he raises Lugh as a normal boy, but still revealing their family secrets. Eventually he starts training him as an assassin. However, he didn't want Lugh to be just a tool and had raised him to understand the human heart and make decisions for himself.

Lugh Tuatha Dé
A loving father, he is very proud of his son and the fact that he has absorbed so many of his teachings, especially on the occasion where his son broke his family creed to help his loved one, similar to how Cian himself had done the same to help his own significant other.

Trivia

 * His name is based on Cian - the physician of the Tuathe Dé (tribe of gods) - from Irish mythology.